In #13-16, use the following information. At the 0.01 level of significance, test the claim that...
In #13-16, use the following information. At the 0.01 level of significance, test the claim that µ ≤ 25.5 cm. Sample data consist of 25 observations, for which x = 27.3 cm and s = 3.7 cm.
13. Give the null hypothesis in symbolic form. (a) H0 : p = 27.3 (b) H0 :x = 27.3 (c) H0 :µ ≤ 25.5 (d) H0 :σ = 3.7 (e) H0 :µ = 27.3
14. Determine the appropriate test statistic. (a) z = 1.278 (b) z = 2.432 (c) t = 2.432 (d) t = 1.278 (e) χ 2 = 18 426 .
15. Find the appropriate critical value(s). (a) t = −2.797, t = 2.797 (b) t = −2.492, t = 2.492 (c) z = −2.326, z = 2.326 (d) t = 2.492 (e) z = 2.326
16. Make the appropriate decision. (a) Reject H0 (b) Fail to reject H0
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In #13-16, use the following information. At the 0.01 level of
significance, test the claim that...
For a two-tailed test at the 0.01 significance level, what is the rejection region when a...
For a two-tailed test at the 0.01 significance level, what is the rejection region when a sample n=25 is drawn from a normal population with unknown standard deviation? Select one: a. Less than -2.797 and greater than 2.797. b. Less than -2.492 and greater than +2.492. c. Less than -2.797 or greater than +2.797. d. None of the suggested answers are correct. e. Less than -2.492 or greater than +2.492.
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You wish to test the following claim a significance level of α 0.01 Ho:p 0.16 Ha:...
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A 0.01 significance level is used for a hypothesis test of the claim that when parents...
A 0.01 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender selection, the proportion of baby girls is 5 less than 0.5. Assume that sample data consists of 55 girls in 121 births, so the sample statistic of results in a z score that is 1 standard deviation below 0. Complete parts (a) through (h) below. Click here to view page 1 of the Normal table. Click here to...
Use a t-test to test the claim about the population mean μ at the given level...
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18 were killed. Use a 0.01 significance level to test the claim that seat belts are effective in reducing fatalities. Complete parts (a) through (c) below a. Test the claim using a hypothesis test. Consider the first sample to be the sample of occupants not wearing seat belts and the second sample to be the sample of occupants wearing seat belts. What are the null and alternative A simple random sample of front-seat occupants involved in car crashes is obtained....
You wish to test the following claim a significance level of α 0.01 Ho:p 0.16 Ha: p 0.16 You obtain a sample of size n 649 in which there are 92 successful observations a. What is the test statistic for this sample? Round to 3 decimal places test statistic b. What is the p-value for this sample? Use Technology Round to 4 decimal places P-value- c. The p-value is... o less than (or equal to) α greater than a d....
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Use a t-test to test the claim about the population mean μ at the given level of significance α using the given sample statistics. Assume the population is normally distributed. Claim: μ z 8300; α= 0.10 Sample statistics: x= 8100, s= 470, n= 22 18. What are the null and alternative hypotheses? ○ A. H0:1128300 O c. Ho: μ#8300 O B. Ho: μ#8300 Ha: μ = 8300 D. Ho: μ 8300 Ha: μ > 8300 Ha: μ < 8300 Ha:...
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