Statistics question and answers for November 16, 2023
- Q A sample of 11 joint specimens of a particular type gave a sample mean proportional limit stress of 8 42 MPa and a sample standard deviation of 0 77 MPa...
- Q 20 Suppose a simple random sample of size 13 is selected from a normal population Find the right endpoint of the 95 confidence interval for the population variance if the...
- Q 1288002 quizzes 3605 A hospital has a patient population of 1000 of which 400 are male and 600 are female Of the male patients 60 have heart disease while only...
- Q 16 Suppose x is a random variable that follows the chi square distribution with 5 degrees of freedom Use the chi square chart to approximate P x 1 610 Answer...
- Q On May 2nd 2023 the Writer s Guild of America went on strike When the writer s advocated for their case regarding fair wages they published the Median salary of...
- Q A hospital has a patient population of 1000 of which 400 are male and 600 are female Of the male patients 60 have heart disease while only 30 of the...
- Q 12 A simple random sample of size 100 was selected from a large population and a 95 confidence interval for the population proportion was constructed Determine whether the confidence interval...
- Q 11 Consider a large population in which 34 17 of individuals have a characteristic of interest If a random sample of size 70 is selected from this population what approximately...
- Q 7 A random sample of size 22 is selected from a large population with unknown mean and unknown standard deviation Find the left endpoint of a 95 confidence interval for...
- Q 4 Suppose a large population has an unknown mean and a known standard deviation 0 4 4 How many individuals should be randomly sampled from this population so that the...
- Q 6 Use the t chart to find t when 0 08 13 0 2 Note If you do not use the t chart you will need to round your answer...
- Q Exclude leap years from the following calculations a Compute the probability that a randomly selected person does not have a birthday on October 12 b Compute the probability that a...
- Q Write log t 2 in expanded form
- Q High school students bound for college take assessment tests One test measures the verbal and mathematical abilities of prospective college students Student scores are reported on a scale that ranges...
- Q A variable is normally distributed with mean 14 and standard deviation 2 a Determine the quartiles of the variable b Obtain and interpret the 80th percentile c Find the value...
- Q robability experiment is conducted in which the sample space of the experiment is 12 13 14 15 16 17 18 19 20 21 22 23 Let event E 13 14...
- Q A data set includes data from student evaluations of courses The summary statistics are n 97 x 4 16 s 0 52 Use a 0 10 significance level to test...
- Q Find the probability P E if P E 0 29 The probability P E is Simplify your answer
- Q List all the permutations of five objects x y z s and t taken two at a time without repetition What is 5P2 List all the permutations of five objects...
- Q A certain four cylinder combination lock has 40 numbers on it To open it you turn to a number on the first cylinder ther to a second number on the...
- Q A woman has nine skirts and two blouses Assuming that they all match how many different skirt and blouse combinations can she wear The woman can wear Type a whole...
- Q fy the H e integ tify the und to t Test Null hypothesis Alternative hypothesis T Value P Value 1 63 0 056 Heft 15 H 15 recent year Usin...
- Q List all the combinations of three objects x y and z taken two at a time What is 3C List all the combinations of three objects x y and z...
- Q Use a 0 01 significance level of all such times is less than 15 minutes the accompanying Minitab display is obtained Test the given claim by using the display provided...
- Q Find the value of the combination 4C3 4C3
- Q Find the value of the permutation 5P1 P Type a whole number
- Q from usa A data set includes weights in grams of 33 Reese s Peanut Butter Cup Miniatures The accompanying Statis claim that the sample is from a population with a...
- Q A data set includes times in minutes of taxi cab rides in New York City yellow cabs during a Friday morning of the same day in a recent year Using...
- Q Students estimated the length of one minute without reference to a watch or clock and the times seconds are listed below Assume that a simple random samp has been selected...
- Q ne teg the d to t Minitab Display Test Null hypothesis Alternative hypothesis T Value P Value 0 053 1 66 Ho 15 H 15
- Q A popular theory is that presidential candidates have an advantage if they are taller than their main opponents Listed are heights in centimeters of randomly selected presidents along with the...
- Q Twenty one different video games showing drug use were observed The duration times of drug use in seconds were recorded When using this sample for a t test of the...
- Q A local teacher wants to see if teaching writing in different ways impacts student learning She has two classes of similar characteristics In one class she will use Teaching Strategy...
- Q Police sometimes measure shoe prints at crime scenes so that they can learn something about criminals Listed below are shoe print lengths foot lengths and heights of males Construct a...
- Q A researcher ran an analysis to understand if corporate culture was related to business revenue He sampled local small business representative of all small businesses in the nation He measured...
- Q In independent sample tests what is the best way to ensure equivalence between samples A Convenience B Random assignment
- Q A local coach wants to see if training in light rooms or dark rooms impacts athlete performance With the single team the coach tries training in different conditions and takes...
- Q If you have a study design that requires a single sample exposed to different levels of the independent variable what sort of test might you consider A Independent samples test...
- Q Which of the following hypotheses indicates expected increases based on an independent variable A Directional hypothesis B Non directional hypothesis
- Q If you have a study design that requires two different samples what sort of test might you consider A Independent samples test B Matched samples test
- Q What is a potential challenge of a matched samples study design A Potential test fatigue of subjects B Equivalence is controlled Less people are required for the study
- Q Which of the following ensures a sample is representative of its population A The sample is convenient B D The sample is unique The sample has properties that are matched...
- Q Which of the following is an example of a sample A Average revenue of a selection of large businesses in the Phoenix area B All large businesses in the country...
- Q Which of the following refers to the variable that is being manipulated during an experiment A Independent variable B Constant C Dependent variable Descriptive variable
- Q Which of the following is an example of a parameter A A selection of large businesses in the Phoenix area B Average revenue of a selection of large businesses in...
- Q Which of the following is the name for the statistical hypothesis that describes an outcome of some change A Null hypothesis B Type I error C Type II error D...
- Q Which of the following is a valid outcome of an inferential test A Rejecting the null hypothesis B Accepting the null hypothesis C Failing the null hypothesis
- Q Which of the following is an example of a statistic A All large businesses in the country B A selection of large businesses in the Phoenix area Average revenue of...
- Q The following table lists the GPAs of 10 randomly selected IRSC students 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2...
- Q Calculate the 11th and 56th percentiles of the data set shown below 18 9 27 17 13 15 Pu 1 x 16 P56 16 5 x o 1 3 24...
- Q A poll of 1152 teens aged 13 to 17 showed that 53 of them have made new friends online Use a 0 10 significance level to test the claim that...
- Q Find the variance of the sample data set 10 02 10 92 16 73 15 97 16 36 11 62 14 66 9 83 15 86 18 66 Round your...
- Q nearest hundredths Fill in the correct answer Check Answer Q Search Slide 25 of 28 Copyright 2023 by Nancy Davis 12 06 A 6 29 202
- Q 3 A simple random sample of size 150 was selected from a large population and a 95 confidence interval for the population proportion was constructed Determine whether the confidence interval...
- Q 5 Sixty individuals are randomly selected from a large population Find the right endpoint of the 95 confidence interval for the population proportion if the sample proportion is 32 Round...
- Q Data were collected for 392 fish from Fort Pierce Inlet The length of the fish in mm is summarized in the table below Lengths mm 120 129 130 139 140...
- Q 6 Suppose a large population has an unknown population proportion p How many individuals should be randomly sampled from this population so that the sample proportion is within 0 06...
- Q The following data set contains the Test 1 scores of all students in a statistics class 50 58 59 60 61 61 61 62 64 66 70 72 73 73...
- Q Use the data below to complete the following calculations 33 43 40 70 69 zy zy X 12 40 y 62 57 80 62 12 70 3 58 11
- Q A data set of monthly expenditures rounded to the nearest dollar incurred at coffee shops by a sample of 550 households has a minimum value of 13 and a maximum...
- Q results are listed below Let F Fort Pierce P Port St Lucie V Vero Beach S Sebastian and O Okeechobee FPPO FFPY Port St Lucie Vero Beach 0 V S...
- Q Data were collected for 455 birds from Indian River County The wingspan of the birds in mm is summarized in the table below Wingspan mm 100 109 110 119 120...
- Q A survey of 600 randomly selected high school students determined that 565 play organized sports a What is the probability that a randomly selected high school student plays organized sports...
- Q Use the data below to complete the following calculations 77 79 22 74 15 49 18 35
- Q In a certain card game the probability that a player is dealt a particular hand is 0 48 Explain what this probability means If you play this card game 100...
- Q Integrate by parts 11 x in xdx X 12
- Q What is the probability of an event that is impossible Suppose that a probability is approximated to be zero based on empirical results Does this mean that the event is...
- Q Is the following a probability model What do we call the outcome green Color red green blue brown yellow orange Probability 0 3 0 0 35 0 15 0 15...
- Q What does it mean for an event to be unusual Why should the cutoff for identifying unusual events not always be 0 05 Choose the correct answer below O A...
- Q Suppose that events E and F are independent P E 0 4 and P F 0 8 What is the P E and F The probability P E and F...
- Q bout 15 of the population of a large country is nervous around strangers If two people are randomly selected what is he probability both are nervous around strangers What is...
- Q For the fiscal year 2007 a tax authority audited 1 61 of individual tax returns with income of 100 000 or more Suppose this percentage stays the same for the...
- Q The average final exam score for the statistics course is 75 A professor wants to see in the average final exam score for students who are given colored pens on...
- Q In a survey 37 of the respondents stated that they talk to their pets on the telephone A veterinarian believed this result to be too high so she randomly selected...
- Q Draw a normal curve with 55 and o 18 Label the mean and the inflection points Choose the correct graph of the normal curve below O A s 55 73...
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