Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) Pavalue = What can you conclude? • The data provides compelling evidence that the true average strength for the WSF/cellulose composite exceeds 48. O The data does not provide compelling evidence that the true average strength for the WSF/cellulose composite exceeds 48.

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Driving test You are about to take the road test for yourdriver’s license. You hear that only 34% of candidatespass the test the first time, but the percentage rises to72% on subsequent retests.a) Create a plan for a simulation to estimate theaverage number of tests drivers take in order to geta license.b) Here are results of 100 trials of a simulation. Use theseresults to estimate the average number of tests driverstake in order to get a license.

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 12%. You would like to be 90% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required? Hint: Video 2 [+] n = Submit Question DELL PII prt sc F10 home end F4 FS F6 F7 F8 F9 F11 24 % 4. 5 7 8. 9. T Y U R

Quiz: Final Exam Spring 2021 Elementary-Statistics-2017.pdf Answered: Test the claim that the X + https://hartnell.instructure.com/courses/19398/quizzes/95019/take Consider the data below. Three random samples in different cities were selected. Water use per household per day were measured. City 1 City 2 City 3 60 56 66 60 64 66 55 45 54 60 41 61 65 58 65 45 44 64 45 46 Test the claim that the samples come from populations with the same mean. Assume all requirements have been met. Use a 5% level of significance. 1. Identify the tail of the test. [ Select ] 2. Find the P-value. [ Select] 3. Will the null hypothesis be rejected? [ Select ] 4. Do the populations appear to have the same mean? [Select ] 10:07 AM O Type here to search 5/21/2021 16 (8)

A survey of 200 senior citizens was undertaken and it was found that 26 of them had the flu vaccine this year. Do these data suggest that the proportion of senior citizens who get the flu vaccine is significantly less than 21 % ? Test at a = 0.10. Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic? -2.7778 Using your answer from the previous question, find the p-value. .0027 What is the critical value for this test? Part 2 of 3

t-test 5. At a local university, English instructors are supposed to grade essays in a class so that the average is exactly 75 points. When 22 random essays were drawn from a large English lecture, the average grade given was 79.1, with s = 6.5. Can we say that this professor is not grading according to the 75 point standard? 6. A marketing company wants to find the average age of employees within a large computer firm. They believe that the average age is 27 years old. After sampling 13 people, they report the following ages: 23 25 31 42 27 35 38 22 28 40 19 26 29 Can they say that their claim is correct? (Use a = .01)