1855 program claims that program participants have a mean weight loss of at least 11 pounds after 1 month. You work for a medical association and are asked to test this claim. A random sample of 30 program participants and their weight losses (in pounds) after 1 month is listed in the table below. Assume the population standard deviation is 3. At a = 0.03, do you have enough evidence to reject the program's claim? Complete parts (a) through (e). 5.6 6 6.2 6.3 7.1 7.8 7.9 8.2 8.3 8.7 D 8.8 9.2 9.3 9.5 9.7 9.9 10.3 10.4 10.5 10.6 10.8 11.2 11.3 11.3 11.4 12 12.7 12.9 13.6 15.3 Identify the rejection region(s). Choose the correct answer below. A. B. Fail to reject Ho- Q Fail to reject Ho C. Fail to reject Ho. AAA Reject Ho Reject Ho -4 Reject Ho Reject Ho- (c) Find the standardized test statistic. z= ☐ (Round to two decimal places as needed.)

A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was 20.6 and the standard deviation was 5.6. The test scores of four students selected at random are 13​, 23​, 7​, and 35. Find the​ z-scores that correspond to each value and determine whether any of the values are unusual.       Question content area bottom Part 1 The​ z-score for 13 is   ​(Round to two decimal places as​ needed.) Part 2 The​ z-score for 23 is   ​(Round to two decimal places as​ needed.) Part 3 The​ z-score for 7 is   ​(Round to two decimal places as​ needed.) Part 4 The​ z-score for 35 is   ​(Round to two decimal places as​ needed.) Part 5 Which​ values, if​ any, are​ unusual? Select the correct choice below​ and, if​ necessary, fill in the answer box within your choice.     A. The unusual​ value(s) is/are ​(Use a comma to separate answers as​ needed.)   B. None of the values are unusual.

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Need help on a and finding the t and p value

Standardized tests: In a particular year, the mean score on the ACT test was 22.3 and the standard deviation was 5.3. The mean score on the SAT mathematics test was 504 and the standard deviation was 100. The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places. Find the z-score for an ACT score of 30.

450 Chapter 8 Hypothesis Testing 14. Internet Visits A U.S. Web Usage Snapshot indicated a monthly average of 36 Internet visits a particular website per user from home. A random sample of 24 Internet users yielded a sample mean of 42.1 visits with a standard deviation of 5.3. At the 0.01 level of significance, can it be concluded that this differs from the national average? Source: New York Times Almanac.

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The Intelligence Quotient (IQ) test scores for adults are normally distributed with a population mean of 100 and a population standard deviation of 20. What is the probability we could select a sample of 20 adults and find the mean of this sample is less than 95? 0.1314 0.7372 0.3686 0.7098