The British Department of Transportation studied to see if people avoid drivingon Friday the 13th. They did a traffic count on a Friday and then again on aFriday the 13th at the same two locations. The data for each location on thetwo different dates is in the table. Do the data show that on average fewerpeople drive on Friday the 13th? Test at the 5% level.Traffic Count6th13th1990, July1376691358251990, July1296991288911991, September1368981382751991, September1389661399401991, December 132021 1296401991, December1192681192141992, March1319381311041992, March1233061247601992, November129499 1292191992, November 138568 135934DatesState the null and alternative hypotheses.Ho: Ha?Ha: Hd ? ✓Calculate the test statistic. Round to four decimal places.d =Calculate the standardized test statistic. Round three decimal places.t =Find the p-value. Round to four decimal places.p-value Find the p-value. Round to four decimal places.p-value=State your decision.O Since the p-value is greater than .05, fail to reject Ho.Since the p-value is less than .05, reject Ho.Since the p-value is greater than .05, reject Ho.O Since the p-value is less than .05, fail to reject Ho.Interpret the results.O At the 5% level of significance, there is enough evidence to show that onaverage more people drive on Friday the 13th.At the 5% level of significance, there is not enough evidence to showthat on average a different number of people drive on Friday the 13th.At the 5% level of significance, there is not enough evidence to showthat on average fewer people drive on Friday the 13th.At the 5% level of significance, there is enough evidence to show that onaverage fewer people drive on Friday the 13th.At the 5% level of significance, there is not enough evidence to showthat on average more people drive on Friday the 13th.O At the 5% level of significance, there is enough evidence to show that onaverage a different number of people drive on Friday the 13th.

The British Department of Transportation studied to see if people avoid driving on Friday the 13th.

Answered: The British Department of…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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please answer blank questions only and or ones with a red x next to them.
The data set shows the GDP per people in 24 countries, along with the proportion of person that have a linkedin social media account. A. the covariance is ___ percentage dollars. be careful of the units. round to the nearest integer. B. r= ___ c. Choose the correct answer below. A. There is no clear relationship between the GDP and LinkedIn accounts. B. There is a strong positive relationship between the GDP and LinkedIn accounts. C. There is a weak positive relationship between the GDP and LinkedIn accounts. D. There is a strong negative relationship between the GDP and LinkedIn accounts. GDP (PPP) Social Media Usage (%) 6,905 89 17,863 87 5,114 86 9,989 86 6,121 83 6,593 83 13,899 81 4,013 83 16,146 75 4,696 79 16,470 76 19,857 72 18,155 71 3,501 74 19,526 75 8,007 76 4,033 73 13,651 69 16,990 68 6,642 70 6,447 70 6,434 68 13,052 64 10,874 47
Given the data below, what is the average of the difference scores? Pretest Posttest 80 89 75 75 81 92 94 56 50 64 69 78 78 4 80.6 74.4 78.4
A pollster wants to know the average income of those who supported John McCain for president. He asks 100 supporters and calculates a mean of $67,543. Is this mean x overbar or mu ? A. mu , because it is calculated based off data from the entire population.. B. x overbar , because it is calculated based off data from the entire population. C. mu , because it is calculated based off data from a sample. D. x overbar , because it is calculated based off data from a sample.
Which one of the cumulative frequencies can be taken while calculating median of the grouped data? a. Succeeding cumulative frequency of the median class O b. Cumulative Frequency of the median class O c. Preceding cumulative frequency of the median class O d. Cumulative frequency is not considered in median
Determine whether the following is an observational study or an experiment and identify the type of data that was collected as qualitative or quantitative. Explain your reasoning a. Researchers wanted to know the proportion of Americans that have been vaccinated against the flu. They asked a random sample of people if they had received the flu shot and recorded their response.
Calculate the appropriate measure of association for this study. Round to the nearest hundredth. In a recent case-control study, investigators enrolled 300 adults with heart disease and 300 healthy adults. During interviews with the participants, the investigators determined participants' use of multivitamins in childhood, which was dichotomized into yes or no. The 2x2 table below shows the frequencies of heart disease case and control status by multivitamin use during childhood. Heart Disease Multivitamin Use Yes No Total Yes 125 175 300 No 135 165 300 Total 260 340 600 QUESTION 4 What is the correct interpretation of the measure of association you calculated in the previous question? (Please consider your calculated number in place of "X" in the answers.) The ODDS of heart disease among people who took multivitamins during childhood is X times the odds of heart disease among people who did not take multivitamins during childhood. The ODDS of multivitamin use during childhood among…
Kara has five exam scores of 6363, 5959, 6767, 7575, and 7373 in her biology class. What score does she need on the final exam to have a mean grade of 7070?

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