Compute a table of expected frequencies. The following table is based on a random sample of people age 18 and older whosaid they were planning a vacation this summer. They were asked if they wouldbring a laptop computer with them.MaleFemaleTotalBringing a Laptop354307661Not Bringing a Laptop356320676Total7106271,337Source: frequerces estimated from The Harris Poll, Americans Work onTheir Vacation 2011a. Compute a table of expectedfrequencies.b. Compare the expected frequemciesand the observed frequencies. Do thedifferences seem relatively large or84EGO

We have to find expected frequency for each cell of contingency table.

Answered: The following table is based on a…

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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Discuss the assumptions for one-sampled t-test and why they are important.
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Table 1 shows the distribution of the opinions of US adults who are married on how long they could go between jobs without any income and still be able to pay all their bills on time. A researcher believes that the distribution of the US adults who are not married is different from those that are married provided in table 1. The researcher randomly selects 250 US adults who are not married and ask them how long they could go between jobs without any income and still be able to pay their bills on time (Table 2). At alpha =0.01, are the distributions different? Table 1 Response Percentage None 33 One month 15 2 months 11 3 months 7 4 months 4 5 months 3 More than 5 months 25 Not sure 2 Total 100 Table 2 Response Frequency, f None 83 One month 46 2 months 37 3 months 11 4 months 9 5 months 7 More than 5 months 52 Not sure 5 What is the P-value?…
Use flat random numbers to estimate .
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Suppose population 1 consists of all students who picked up all the tests they completed prior to taking the final exam. Suppose population 2 consists of all students who had one or more tests that they completed that were not picked up prior to taking the final exam. Based on years of grading final exams and observing grades, STAT 210 instructors conjecture that the mean final exam grade for all students who picked up all their tests is greater than the mean final exam grade for all students who had one or more tests that were not picked up. A simple random sample of 56 students who picked up all tests they completed was selected, and the mean score on final exam for this sample of students was 83 with a standard deviation of 10.4. An independent simple random sample of 51 students who had one or more tests that were not picked up was selected, and the mean score on the final exam for this sample of students was 67 with a standard deviation of 24.2. Both distributions are skewed…
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An investigator analyzed the leading digits from 794 checks issued by seven suspect companies. The frequencies were found to be 218, 130, 106, 83, 65, 48, 48, 37, and 59, and those digits correspond to the leading digits of 1, 2, 3, 4, 5, 6, 7, 8, and 9, respectively. If the observed frequencies are substantially different from the frequencies expected with Benford's law shown below, the check amounts appear to result from fraud. Use a 0.025 significance level to test for goodness-of-fit with Benford's law. Does it appear that the checks are the result of fraud? Leading_Digit Actual_Frequency Benford's_Law:1) 218 30.10%2 )130 17.60%3) 106 12.50%4) 83 9.70%5) 65 7.90%6) 48 6.70%7) 48 5.80%8) 37 5.10%9) 59 4.60% Calculate the test statistic, χ2 =? (Round to three decimal places as needed.) Calculate the P-value=? (Round to four decimal places as needed.)
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