Statistics question and answers for December 24, 2023
- Q Using Fig1a png Fig1b png and Fig1c png answer the following question For large values of p the binomial distribution is skewed to the 1 left II right III symmetric...
- Q Using Question 11 answer the following question Use your calculator to calculate the standard deviation of the number of minority students selected Use the formula o np 1 p to...
- Q According to the CDC alcohol impaired drivers are responsible for 32 of all crash deaths in the US Suppose we take a random sample of 100 car accident deaths and...
- Q Using Question 11 answer the following question Assuming that the sentate represents the entire student body how many minority students would you expect to be selected for the sentate Use...
- Q Now see what happens when you hold p constant and vary n Let X be a binomial random variable with p 0 24 Obtain the probability distribution and graph of...
- Q Using Question 11 calculate the probability of the Senate being made up of so few minority students purely by chance That is what is the value of P X S...
- Q A Student Sentate at a large university is made up of 60 students randomly selected to represent the entire student body 20 of the students at this university are minoritie...
- Q Using the results found in Question 2 calculate by hand the probability that more than 15 students in the sample graduate in 4 years That is find P X 15...
- Q It has been reported that 39 of college students graduate in 4 years Consider a random sample of thirty students and let the random variable X be the number who...
- Q According to the CDC alcohol impaired drivers are responsible for 32 of all crash deaths in the US Suppose we take a random sample of 100 car accident deaths and...
- Q we do not reject Ho A corresponding relationship between confidence intervals and two talled hypothesis tests also is valid for other parameters such as p or P P which we...
- Q Paired differences 10 1 a Two math facts drills were given to 10 students The first was given before PE class and the second was given after PE class The...
- Q stimating proportions and finding a value for sample size 8 3 a A random survey of customers of McDonald s restaurants was taken The results showed that 18 of the...
- Q Find mean standard deviation and z values 7 2 a From 2012 thru 2022 the weight of babies born in hospitals in Metropolis have a normal distribution of with a...
- Q 4 Find the number of samples needed for a given significance level historic p know and desired margin of error Find the number of samples needed for a given significance...
- Q The demand D for a new rollerball pen is given by D 0 006p3 0 3p 150p where p is the price in dollars a Find the rate of change...
- Q Fill in the blanks by selecting one option from each menu aby Part 1 3 points aby Part 2 3 points Find the 90 confidence interval for the average number...
- Q A statistics class is estimating the mean height of all female students at their college They collect a random sample of 43 female students and measure their heights The mean...
- Q BFW Publishers A group of researchers is designing an experiment to test whether an herbal supplement will help people lose weight The researchers selected a sample of 500 adults who...
- Q 4 Assume each outcome is equally likely in the sample space S provided below Find P AC S 0 1 2 3 4 A 0 1 Answer Previous Answer 0...
- Q A football coach hears that a new exercise program will increase upper body strength better than lifting weights He is eager to test this new program in the off season...
- Q Sketch the region corresponding to the statement P Z c 0 25 Shade Left of a value 3 Click and drag the arrows to adjust the values 2 T 1...
- Q 5 Determine the interquartile range from the boxplot below Assume that each quartile represented in the boxplot below in an integer 0 H TTT 10 Answer 15 Previous Answer 8...
- Q a State the random variable rv X the cholesterol level of a randomly selected woman age 45 59 in Ghana Nigeria or Seychelles b Find the probability that a randomly...
- Q In the United States males between the ages of 40 and 49 eat on average 103 1 g of fat every day with a standard deviation of 4 32 g...
- Q 2 Chi Square Test for Association 3 An advertising firm wanting to target people with strong desires for success conducted a study to see if such people differed in the...
- Q A dishwasher has a mean lifetime of 12 years with an estimated standard deviation of 1 25 years Assume the lifetime of a dishwasher is normally distributed Round the probabilities...
- Q The mean starting salary for nurses is 67 694 dollars nationally The stand 10 333 dollars Assume that the starting salary is normally distributed Round the probabilities to four decimal...
- Q In the United States males between the ages of 40 and 49 eat on average 103 1 g of fat every day with a standard deviation of 4 32 g...
- Q The following table lists the number of years of education past high school and the annual income of six people Determine the linear correlation coefficient for the data and also...
- Q The mean cholesterol level of women age 45 59 in Ghana Nigeria and Seychelles is 5 1 mmol l and the standard deviation is 1 0 mmol l Assume that...
- Q State the decision rule to test the null hypothesis 496 people were asked if they were satisfied with their jobs 39 said they were Alternative Hypothesis is H p 0...
- Q Assume that a hypothesis test of the given claim will be conducted Identify the type I or type II error for the test A researcher claims that the amounts of...
- Q Use the P value method to test the given hypothesis In a sample of 162 children selected randomly from one town it is found that 36 of them suffer from...
- Q Identify the null hypothesis Ho and the alternative hypothesis H Use u for a claim about a mean p for a claim about a proportion and o for a claim...
- Q Compute the test statistic used to test the null hypothesis Out of 90 observations 50 were successes H p0 59 Confidence level 98 O 1 736 O 0 005 O...
- Q Identify the null hypothesis Ho and the alternative hypothesis H Use for a claim about a mean p for a claim about a proportion and o for a claim about...
- Q Formulate the indicated conclusion in nontechnical terms Be sure to address original claim Carter Motor Company claims that its new sedan the Libra will average better than 30 m per...
- Q Find the P value for the indicated hypothesis test An airline claims that the no show rate for passengers booked on its flights is less than 6 Of 380 randomly...
- Q Suppose you have sample data where 20 and n 25 You want to create a 99 confidence interval for the mean Also the sample standard deviation is 4 a What...
- Q Use the display of data to find the mean median mode and midrange Frequency The median of the data is 10 8 CO 4 N 0 Score 10 11 12...
- Q 2 The breaking strength of plastic bags used for packaging produce is normally distributed with a mean of 7 5 pounds per square inch and a standard deviation of 2...
- Q 4 A game is played where a 4 sided die is rolled and then a spinner with 10 equal sized sections labelled 1 thru 10 is spun The player wins...
- Q 1 A health psychologist was interested in women s workout preferences Of the 56 participants surveyed 22 preferred running 8 preferred swimming 15 preferred cross fit and 11 preferred an...
- Q Data on Scholastic Aptitude Test SAT scores are published by the College Entrance Examination Board in National College Bound Senior SAT scores for randomly selected students from each of four...
- Q 1 The circus club has 22 members There are 9 jugglers and 13 tumblers The club will select 5 members to perform in the upcoming variety show a What is...
- Q The time it takes me to wash the dishes on a randomly selected night is uniformly distributed between 7 minutes and 19 minutes a State the random variable in the...
- Q 3 It is estimate that 40 of the general population wears glasses If a random group of 15 people are selected what is the probability that a 11 People will...
- Q The mean yearly rainfall in Sydney Australia is about 137 mm and the standard deviation is about 69 mm Assume yearly rainfall is normally distributed Round the probabilities to four...
- Q The size of fish is very important to commercial fishing A study conducted in 2012 found the length of Atlantic cod caught in nets in Karlskrona to have a mean...
- Q The mean starting salary for nurses is 67 694 dollars nationally The standard deviation is approximately 10 333 dollars Assume that the starting salary is normally distributed Round the probabilities...
- Q According to the WHO MONICA Project the mean blood pressure for people in China is 128 mmHg with a standard deviation of 23 mmHg Assume that blood pressure is normally...
- Q The times required by three workers to perform an assembly line task were recorded on five randomly selected occasions Here are the times to the nearest minute Sample mean Sample...
- Q Four brands of flashlight batteries are to be compared by testing each brand in five flashlights Twenty flashlights are randomly selected and divided randomly into four groups of five flashlights...
- Q Engineers must consider the breadths of male heads when designing helmets The company researchers have determined that the population of potential clientele have head breadths that are Normally distributed with...
- Q How fast can male college students run a mile There s lots of variation of course During World War II physical training was required for male students in many colleges...
- Q The graph illustrates the Distribution of the Prices of College Textbooks l 140 161 182 203 224 245 266 Distribution of the Prices of College Textbooks 9 What is the...
- Q 13 11 c Which of the following is the correct picture of the probability distribution of X O a bell shaped curve that starts at 0 and ends at 11...
- Q The time it takes me to wash the dishes on a randomly selected night is uniformly distributed between 7 minutes and 19 minutes a State the random variable in the...
- Q The weights of 9 ounce bags of a particular brand of potato chips can be modeled by a normal distribution with mean u 9 12 ounces and standard deviation o...
- Q Find a z score such that 29 percent of the area under the standard normal curve is below that score Click the icon to view the area under the standard...
- Q Use the following information to answer the next eight exercises Carbon 14 is a radioactive element with a half life of about 5 730 years Carbon 14 is said to...
- Q n 1 s 02 The test for a single variance using the Chi Square distribution is given by x n 10 s 6 48 and a 2 16 find 2...
- Q Sometimes professional basketball players aren t consistent in their performance game to game Suppose that the standard deviation of the number of points scored by shooting guards in the NBA...
- Q 20 of all college students volunteer their time Is the percentage of college students who are volunteers different for students receiving financial aid Of the 318 randomly selected students who...
- Q The average fruit fly will lay 419 eggs into rotting fruit A biologist wants to see if the average will change for flies that have a certain gene modified The...
- Q 1 82 The time in minutes until the next bus departs a major bus depot follows a distribution with f x 20 where x goes from 25 to 45 minutes...
- Q The average amount of time it takes for couples to further communicate with each other after their first date has ended is 3 15 days Is this average longer for...
- Q The average number of cavities that thirty year old Americans have had in their lifetimes is 5 Do twenty year olds have fewer cavities The data show the results of...
- Q 110 Researchers investigate the prevalence of a particular infectious disease in countries around the world According to their data Prevalence of this disease refers to the percentage of people ages...
- Q Decoration Pumpkin Ghost Spiders Candy 5 2 iv not offer raisins 9 Chips 1 7 6 ii be decorated with ghosts or offer chips iii offer candy and be decorated...
- Q Flag question In a survey of 100 students the following table represents the number of pages of their Perception textbook students report to have completed last night Calculate mean range...
- Q Simplify the following 2g 2h No Negative Exponer
- Q In a class of 300 students Jean s standard score of 2 corresponds to a grade of 85 and Anne s standard score of 1 corresponds to a grade of...
- Q responses of 10 students who were asked how many chapters of their Perception textbook they had read and how many questions on the surprise quiz they had answered correctly Questions...
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