Statistics question and answers for November 07, 2023
- Q K The graph to the right shows the number of cities with certain average annual snowfall amounts in inches Identify the level of measurement of the data listed on the...
- Q Identify the sampling technique used In a recent telephone survey participants were asked to answer yes or no to the question Are you in favor of the death penalty Six...
- Q K ampling techniques used and discuss potential sources of bias if any Explain Assume the population of interest is the student body at a university Questioning students as they leave...
- Q The jersey numbers for players on a basketball team are listed below 13 31 4 29 Identify the level of measurement of the data set Explain your reasoning 2 9...
- Q A study of 803 senior citizens shows that participants who exercise regularly exhibit less of a decline in the cognitive ability than those who barely exercise at all From this...
- Q K Is an inherent zero Describe three examples of data sets that have inherent zeros and three that do not Choose the correct answer below OA An inherent zero is...
- Q Determine whether the underlined numerical value is a parameter or a statistic Explain your reasoning A survey of 42 out of hundreds in a dining hall showed that 40 5...
- Q Identify the data set s level of ages of students in a statistic class OA ratio OB ordinal O C nominal OD interval measurement
- Q A modified roulette wheel has 44 slots One slot is 0 another is 00 and the others are numbered 1 through 42 respectively You are placing a bet that the...
- Q Choose the correct answer below ets that have inherent zeros and three that do not O A An inherent zero is a zero that occurs in the data set naturally...
- Q Identify the data set s level of measurement temperatures of 20 selected refrigerators O A interval OB nominal OC ratio OD ordinal
- Q a Marital status c Pain level scale of 0 to 10 intake form Identify the level of measurement of the data a What is the level of measurement for Marital...
- Q Identify the sampling technique used A researcher for an airline interviews all of the passengers on five randomly selected flights A random B cluster C stratified D systematic O E...
- Q Complete the table Grade Relative frequency A 0 0833 B 11 0 3055 C 15 0 4166 D 4 0 1111 F 3 0 083 Round to two decimal places...
- Q Simple Event Enter fractions in reduced form using a for the fraction bar Do not use any spaces in your answer except for the Outcome of Interest G R Y...
- Q A modified roulette wheel has 36 slots One slot is 0 another is 00 and the others are numbered 1 through 34 respectively You are placing a bet that the...
- Q modified roulette wheel has 36 slots One slot is 0 another is 00 and the others are numbered 1 through 34 respectively You are placing a bet that the outcome...
- Q A modified roulette wheel has 40 slots One slot is 0 another is 00 and the others are numbered 1 through 38 respectively You are placing a bet that the...
- Q ause the mean is very sensitive to extreme values it is not a resistant measure of center By deleting some low values and high values the trimmed mean is more...
- Q given data to construct a boxplot and identify the 5 number summary 146 135 143 125 OA 148 Which boxplot below represents the data O C second year medical students...
- Q For which of the following scenarios would it be appropriate to use a one sample z test choose one or more Comparing the average weight of newborns in Hospital A...
- Q Which of the following IS ARE true about measures of effect choose one or more they aid in the interpretation of statistical results there are many different types of measures...
- Q The purpose of the one sample test is choose one or more To examine the difference between one sample and a population To compare a test statistic to alpha Compare...
- Q When would you use the confidence interval formula for a proportion choose one or more You do not know the standard deviation You have summary information as a percentage or...
- Q Let population consist of the values 10 cigarettes 11 cigarettes and 21 cigarettes smoked in a day Show that when samples of size 2 are randomly selected with replacement the...
- Q Points 0 75 of 1 population consist of the values 10 cigarettes 11 cigarettes and 21 cigarettes smoked in a day Show that when samples of size 2 are randomly...
- Q Let a population consist of the values 10 cigarettes 11 cigarettes and 21 cigarettes smoked in a day Show that when samples of size 2 are randomly selected with replacement...
- Q Find the standard deviation s of sample data summarized in the frequency distributor represents the class frequency and n represents the total number of sample values Also compare the computed...
- 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...
- Q a Find the mean number of births per day b Find the probability that in a single day there are 19 births c Find the probability that in a single...
- Q Assume that a randomly selected subject is given a bone density test Those test scores are normally distributed with a mean of 0 and a standard deviation of 1 Draw...
- Q An airliner carries 250 passengers and has doors with a height of 70 in Heights of men are normally distributed with a mean of 69 0 in and a standard...
- Q Each of two parents has the genotype blond red which consists of the pair of alleles that determine hair color and each parent contributes one of those alleles to a...
- Q the arrival delay times in minutes of airlines flights is given below Determine whether they appear to be from a population a normal distribution Assume that this requirement is loose...
- Q with replacement the samples have mean absolute deviations that do not center about the value of the mean absolute deviation of the population What does this indicate of the values...
- Q et a population consist of the values 10 cigarettes 11 cigarettes and 21 cigarettes smoked in a day Show that when samples of size 2 are randomly selected with replacement...
- Q In an experiment college students were given either four quarters or a 1 bill and they could either keep the money or spend it on gum The results are summarized...
- Q Volumes cm of 20 brains have a mean of 1056 8 cm and a standard deviation of 124 6 cm Use the given standard deviation and the range rule of...
- Q The brain volumes cm of 20 brains have a mean of 1056 8 cm and a standard deviation of 124 6 cm Use the given standard deviation and the range...
- Q Assume that there is a 11 rate of disk drive fallure in a year a If all your computer data is stored on a hard disk drive with a copy...
- Q Based on a poll 69 of Internet users are more careful about personal information when using a public Wi Fi hotspot What is the probability that among three randomly selected...
- Q The data represent the results for a test for a certain disease Assume one individual from the group is randomly selected Find the probability of getting someone who tested negative...
- Q In an experiment college students were given elther four quarters or a 1 bill and they could elther keep the money or spend it on gum The results are summarized...
- Q In a certain country the true probability of a baby being a boy is 0 515 Among the next nine randomly selected births in the country what is the probability...
- Q If n 20 what constant do we use to calculate the 99 confidence interval of the mean O 2 861 O2 086 O 2 846
- Q Suppose that 12 of all steel shafts produced by a certain process are nonconforming but can be reworked rather than having to be scrapped Consider a random sample of 200...
- Q Why do we need confidence intervals choose one or more To express statistical uncertainty To give insight about the magnitude of the effect To accurately state a range of a...
- Q TUI The accompanying table lists the ages of acting award winners matched by the years in which the awards were won Construct a scatterplot find the value of the linear...
- Q If n 15 what constant do we use to calculate the 95 confidence interval of the mean O2 132 O2 145
- Q A college professor never finishes his lecture before the end of the hour and always finishes his lectures within 2 min after the hour Let X the time that elapses...
- Q For a sample with df 5 what is the t score constant to calculate a confidence level of 99 4 032 O 2 015 2 571
- Q What affects the width of a confidence interval choose one or more O Variation within the population O Sample size O Median of the sample Our desired confidence level
- Q In order to determine whether or not you will reject the null hypothesis alpha should be compared to which of the following Obtained value Significance level O p value O...
- Q Suppose 243 subjects are treated with a drug that is used to treat pain and 52 of them developed nausea Use a 0 10 significance level to test the claim...
- Q Which of the following statements about the p value is true O A very small p value allows us to say there is enough evidence to accept the p value...
- Q XO 0 1 2 3 P x 0 3 0 3 0 3 0 1 Find the standard deviation of this probability distribution Give your answer to at least 2...
- Q e null and alternative hypothesis in symbols would be Ho p 0 6 H p 0 6 O Ho p 0 6 H p 0 6 Ho p 0 6...
- Q 31 felled black cherry trees The diameter of the tree is measured 4 5 feet above the ground 9 Volume in cubic ft 1 70 40 10 D 70 30...
- Q The nut hypothesis in words would be The proportion of all people that prefer Trydint gam is greater than 0 The proportion of people is a sample that prefer t...
- Q A data set about speed dating includes like ratings of male dates made by the female dates The summary statistics are n 183 x 6 86 s 2 27 Use...
- Q If z follows the standard normal distribution find P z 1 Remember that o from 1 to 1 is 0 68 Select the correct answer below O 0 68 O...
- Q 15 For which of the following scatter plots would regression be most appropriate A C G ys M 2 ys 4 3 2 1 D 0 3 D M O...
- Q Figure 8 6 The vertical distance between points A and B represents a tax in the market 22 20 18 16 14 12 10 6 4 Supply Demand 100 200...
- Q Suppose weights of running shoes have an unknown distribution with mean 11 and standard deviation 2 ounces A sample of size n 40 is randomly taken from the population and...
- Q The following data set provides a summary statistic of 5 742 interviews of commuters Transporation Type Drove Alone Carpooled Public Transporation Bicycle Walked Other Means Worked at home Mean Number...
- Q Cost of health care The following table presents the mean cost of a hospital stay in 1000s and the number of hospital stays in millions in the United States for...
- Q Given the following histogram decide if the data is skewed or symmetrical Frequency 300 250 200 150 100 50 0 1 Select the correct answer below The data are skewed...
- Q As in the previous problem 64 students are randomly selected from a statistics class If X is the number of students who received a B or above on the final...
- Q Suppose 30 of all households in a certain town own 3 or more vehicles What is the probability that a random sample of 60 households in that town will contain...
- Q 8 900 income freshman to a university take an entrance exam with the top 10 being offered admission to the university s honors program The average test score is 78...
- Q 1 z X X S when x 83 x 91 and s
- Q The following data set provides information about the City of Somerville Assessors Valuation for the fiscal year 2016 Building Type Condominium Condominium Condominium Condominium Condominium Condominium Condominium Residential Residential Land...
- Q The following data set provides information of Households by Total Money Income Race and Hispanic Origin of Householder Race and Hispanic orign of householder and year ALL RACES 2015 Select...
- Q Assume that X is a Poisson random variable with 6 Calculate the following probabilities Do not round intermediate calculations Round your final answers to 4 decimal places a P X...
- Q A video game company sells an average of 132 games a month per store with a standard deviation of 9 games The company is looking to reward stores that are...
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