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Test the claim about the population mean, μ, at the given level of significance using the given sample statistics. Claim μ=30, a=0.04; a=3.32 Sample statistics: x=28.4, n=80 Identify the null and alternative hypotheses. Choose the correct answer below. A. Ho 130 Ha μ<30 Ẹ, Ho M=30 Ha μ#30 C. Ho <30 D. Ho 30. H₂ H=30 H₂ μ=30 F. Ho >30 E Ho H=30 Ha μ>30 Ha H=30 Calculate the standardized test statistic The standardized test statistic is -4.31 (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round decimal places as needed.) OA. The critical values are + OB. The critical value is
Test the claim about the population mean, μ, at the given level of significance using the given sample statistics. Claim 6000, α=0.08; a=411 Sample statistics: x=5900, n=32 Identify the null and alternative hypotheses Choose the correct answer below ⒸA. Ho μ*6000 Ẹ. Ho 6000 На их6000 Η μ=6000 2. C. Ho W26000 H₂ μ*6000 OD. Ho 6000 H₂ μ≤6000 OF. Ho 6000 OE Hoμ*6000 Η μ26000 H₂ H 6000 Calculate the standardized test statistic The standardized test statistic is 1.38 (Round to two decimal places as needed) Determine the critical value(s) Select the correct choice below and fill in the answer box to complete your choice (Round to two decimal places as needed) OA. The critical value is B. The critical values are t
A random sample of 84 eighth grade students' scores on a national mathematics assessment fest has a mean score of 287. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 280. Assume that the population standard deviation is 30. At a=0.11, is there enough evidence to support the administrator's claim? Complete parts (a) through (e) (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below A. Ho us280 OB. Ho <280 H Ha μ>280 (claim) OC. Ho =280 (claim) Ha H>280 Ha 2280 (claim) OD. Ho 2280 (claim) OE H₂ H 280 OF Ho us280 (claim) H₂ H 280 Ha μ> 280 (claim) Ha H>280 (b) Find the standardized test statistic z, and its corresponding area z = 2:14 (Round to two decimal places as needed.) (c) Find the P-value P-value (Round to three decimal places as needed.) =
A nutritionist claims that the mean tuna consumption by a person is 3.3 pounds per year. A sample of 50 people shows that the mean tuna consumption by a person is 3.1 pounds per year. Assume the population standard deviation is 1.21 pounds. At a=0.04, can you reject the claim? (a) Identify the null hypothesis and alternative hypothesis A. Ho 31 C. Hop=33 H₂ H33 H₂ H31 OD. Ho 3.1 OF H₂ H33 H₂ ≤33 H₂ =3.11 (b) Identify the standardized test statistic Z= (Round to two decimal places as needed) OB. Ho 31 H₂ μ>3.1 OE H₂ HS33 H₂ H33