Basic Math question and answers for September 05, 2024
- Q Which of the following is associated with a parameter?Choose the correct answer below.A. Anumerical measurement describing some characteristic of a sample.B. Data that were obtained from an entire population.C. Data...
- Q 26. Veronica went to the mall and bought several small gifts for her sister's birthday. The prices of the items were the following:$8, $10, $6, $7, $10, $2, $5, $3,...
- Q The following data refer to the weight gain (in pounds) of ten women during pregnancy.85 41 29 39 37 41 43 30 36 35Find the median:Find the mean:Compare the...
- Q Suppose that we wished to construct a frequency table for weights of RegularCoke (in cans). The first several data values are:0.8163,0.8192,0.8150,0.8211,0.8181,(All measurements are in lbs; the full set of data...
- Q Two statistics students at UCLA conducted an energy efficiency survey of graduate student apartments.There were seven university apartment buildings, and the students randomly selected three to be includedin the study....
- Q 1. Determine the given info below. Round to the nearest tenth if necessary.Make a box-and-whisker plot for the data given.79, 98, 87, 82, 99mode:mean:five-number summary for box and whisker plot:minimum:1st...
- Q An electric bill is an essential expense for young people who get their firstThe following is a list of Jordan's monthly electric bills for the pastapartment.10 months.$115, $150, $144, $126,...
- Q Seven students are randomly selected from the students at a 24,000 student college. Thirty percent of the students in the school have a pet dog. The remaining seventy percent of...
- Q 3.2, 3.1, 4.5, 5.0, 4.1, 2.9, 1.8, 0.8, 2.2, 2.3, 3.1, 3.0mode:mean:five-number summary for box and whisker plot:minimum:1st quartile:IQR:standard deviation:median:maximum:3rd quartile:
- Q A t-test is to be used to test the claim that the mean age of NSC students is greater than 24.5 years of age. A simple random sample of 36...
- Q The ages of students in a gymnastics class are 12, 15, 17, 9, 7, 8, 15, 10, 13,6, 5, 7, 13, 10, 7, 9, 5, 6, 7, 7, and 4.Determine...
- Q In a random sample of eight people, the mean driving distance to work was 23.1 miles and the standard deviation was 6.3 miles. Assume the population is normallydistributed and use...
- Q What is the difference between independent and dependent events?Choose the correct answer below.Two events are independent if only one of the two events can occur. Two events are dependent if...
- Q A sample survey was taken of 100 customers to determine which brand of snack crackers they prefer. Brand A was selected by about 17% of the customers, brand B was...
- Q A company's board of directors took a random sample of 10% of the company's employees and surveyed them about their happiness at work.What would most likely happen if they decided...
- Q Hal earns a B on 75% of his tests. He divides a spinner into 12 equal spaces to model the grades he earns on his tests, with nine of the...
- Q In a survey of 2738 adults, 1475 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results....
- Q Mariah needs to randomly select one of three groups of students to make their presentation first. Which simulation tools could she use in this situation?a six-sided number cubetwo coinsa bag...
- Q a) A snowman weighed 120 pounds when it started to melt. It melted at a constant rate of 8 pounds per hour. Write an equation for the described linear relation....
- Q Gabriella asked 5 of her coworkers how much storage space they were currentlyusing on their computer. Here are their responses (in gigabytes):4, 8, 8, 9, 11a. Find the meanb. Find...
- Q The following data points represent the number of attendees at each of the danceevents hosted by Success Academy44, 51, 47, 39, 32, 35, 34, 35, 40, 62a. Find the interquartile...
- Q Identify the sampling techniques used, and discuss potential sources of bias (if any). Explain.After a wildfire, a disaster area is divided into 250 equal grids. Thirty of the grids are...
- Q Given each data set, determine the mean, median, mode for each set of data. Construct a box and whisker plot for each data set, using the median.1. 3, 8, 4,...
- Q A social service organization reports that the level of educational attainment of mothers receiving food stamps is uniformly distributed. To test this claim, you randomly select 101mothers who currently receive...
- Q The weights of ice cream cartons are normally distributed with a mean weight of 8 ounces and a standard deviation of 0.6 ounce.(a) What is the probability that a randomly...
- Q The life spans of a species of fruit fly have a bell-shaped distribution, with a mean of 30 days and a standard deviation of 5 days.(a) The life spans of...
- Q What is a discrete probability distribution? What are the two conditions that determine a probability distribution?What is a discrete probability distribution? Choose the correct answer below.OA. A discrete probability distribution...
- Q What is replication in an experiment? Why is replication important?Choose the correct answer below.*****O A. Replication is repetition of an experiment under different conditions. Replication is important because it enhances...
- Q A certain brand of automobile tire has a mean life span of 39,000 miles and a standard deviation of 2,100 miles. (Assume the life spans of the tires have a...
- Q The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 25 minutes and a standard deviation of 7 minutes. Find theprobability that...
- Q Below is the number of pages in each of the six books that Pedro read this summer.584, 201, 255,44,312,334Using the data, create a histogram.
- Q You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the populationmean. Interpret the results and compare...
- Q Use the accompanyinga. Find the quartiles.b. Find the interquartile range.c. Identify any outliers.60 61 58 61 55 64 56 64 63 55 56 56 58 54 78data set to complete...
- Q You are investigating the relationship between the ages of adults and what aspect of career development they consider to be the most important. You randomly collect the datashown in the...
- Q The ages of the winners of a cycling tournament are approximately bell-shaped. The mean age is 27.1 years, with a standard deviation of 3.3 years. The winner in one recent...
- Q Suppose 211 subjects are treated with a drug that is used to treat pain and 53 of them developed nausea. Use a 0.10 significance level to test the claim that...
- Q Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 69 miles per hour, with a standard deviation of 5 miles per...
- Q You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengersmust you survey? Assume...
- Q The pulse rates of 154 randomly selected adult males vary from a low of 37 bpm to a high of 101 bpm. Find the minimum sample size required to estimate...
- Q Suppose that an airline uses a seat width of 16.7 in. Assume men have hip breadths that are normally distributed with a mean of 14.1 in. and a standard deviation...
- Q An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 140 lb and 201 lb. The new population of pilotshas...
- Q The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults whohave heard of the...
- Q A ski gondola carries skiers to the top of a mountain. Assume that weights of skiers are normally distributed with a mean of 198 lb and a standard deviation of...
- Q Captain Brewster captured a pack of aliens. The following data points represent the lengths of each of thealiens' big toes (in centimeters).18, 16, 17, 17, 16, 15, 16a. Make a...
- Q Determine the 95% confidence interval for the difference of the sample means. Then complete thestatements.The 95% confidence interval isThe value of the sample mean difference is 1.74, which fallsinterval.
- Q In a study of 420,115 cell phone users, 127 subjects developed cancer of the brain or nervous system. Test the claim of a somewhat common belief that suchcancers are affected...
- Q A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the amounts of mercury (ppm) found in tuna sushi...
- Q Salaries of 33 college graduates who took a statistics course in college have a mean, x, of $67,900. Assuming a standard deviation, a, of $17,893, construct a 90% confidence interval...
- Q The ages of a group of 160 randomly selected adult females have a standard deviation of 16.9 years. Assume that the ages of female statistics students have lessvariation than ages...
- Q A genetic experiment with peas resulted in one sample of offspring that consisted of 447 green peas and 162 yellow peas.a. Construct a 95% confidence interval to estimate of the...
- Q In a survey of 3194 adults aged 57 through 85 years, it was found that 88.3% of them used at least one prescription medication. Complete parts (a) through (c) below.a....
- Q Before every flight, the pilot must verify that the total weight of the load is less than the maximum allowable load for the aircraft. The aircraft can carry 38 passengers,and...
- Q A survey found that women's heights are normally distributed with mean 63.6 in and standard deviation 2.2 in. A branch of the military requires women's heights to be between 58...
- Q Find the P-value for a left-tailed hypothesis test with a test statistic of z = -1.57. Decide whether to reject Ho if the level of significance is a = 0.05.P-value...
- Q The top 14 speeds, in miles per hour, for Pro-Stock drag racing over the past two decades are listed below. Find the mean speed. 181.1 202.2 190.1 201.4 191.3 201.4...
- Q A laptop manufacturer claims that the mean life of the battery for a certain model laptop is less than 5 hours. Choose the correct null and alternative hypothesis.A. ?0: u...
- Q The dollar value v(t) of a certain car model that is f years old is given by the following exponential function.v (t)=32,000 (0.86)'Find the initial value of the car and...
- Q A solar street light is 34 ft above the curb of a street, and lights all the way to the middle of the street. If the street is 230 feet...
- Q Given all information from question 4,5,6. If Sony has 220 cards leftover in inventory at the end of a review period, how much should it order from its supplier to...
- Q More time on the Internet: A researcher polled sample of 1049 adults in the year 2010, asking them how many hours per week they spent on the Internet.The sample mean...
- Q For a certain nationwide standardized test there are two commonly used preparation products on the market: StudyFocus and Prepara. A researcher in theEducation department at a nearby university wants to...
- Q The following confidence interval is obtained for a population proportion, p: 0.843 < p < 0.875. Use these confidence interval limits to find the margin of error, E.0.0170.8590.0320.016
- Q Assume that military aircraft use ejection seats designed for men weighing between 149.3 lb and 216 lb. If women's weights are normally distributed with a mean of178.8 lb and a...
- Q Find the z-scores for which 25% of the distribution's area lies between - z and z.Click to view page 1 of the table. Click to view page 2 of the...
- Q The population of bats in a large cave is 700 and is growing exponentially at 8% peryear. Write a function to represent the population of bats after t years, where...
- Q Find the indicated critical z value.Find the value of -z ?/2 that corresponds to a confidence level of 96.68%.-2.130.0166-1.842.13
- Q We take a sample (size of 36) from a Normal population with mean of 370 and standard deviation of 48. What is the probability that the sample mean is less...
- Q Suppose a jar contains 6 red marbles and 17 blue marbles. If you reach in the jar and pull out 2marbles at random without replacement, find the probability that both...
- Q Terrence would like to estimate the mean the number of books students at his school read during the summer. There are 595 students athis school.Which statements are true?Select each correct...
- Q Suppose a jar contains 18 red marbles and 33 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the...
- Q The highway mileage (mpg) for a sample 8 different models of a car company can be found below. Find the mean, median, mode, and standard deviation. Round to one decimal...
- Q Sample data for the arrival delay times (in minutes) of airlines flights is given below. Determine whether they appear to be from a population with a normal distribution.Assume that this...
- Q As the manager of the human resources department at your firm, you are investigating the number of sick days employees took during the last calendar year. For employees in the...
- Q The heights of fully grown trees of a specific species are normally distributed, with a mean of 85.5 feet and a standard deviation of 5.75 feet. Random samples of size...
- Q If the correlation coefficient for a given scatterplot is r = -0.81, which of the following must be true about the relationship between the explanatory and response variable?The association is...
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