On average, Americans have lived in 2 places by the time they are 18 years old. Is this average more for college students? The 42 randomly selected college students who answered the survey question had lived in an average of 2.28 places by the time they were 18 years old. The standard deviation for the survey group was 0.6. What can be concluded at the α= 0.10 level of significance? The null and alternative hypotheses would be: H0: H1: b.The test statistic = (please show your answer to 3 decimal places.) c. The p-value = (Please show your answer to 4 decimal places.)

Zappos is an online retailer based in Nevada and employs 1,300 employees. One of their competitors, Amazon.com, would like to test the hypothesis that the average age of a Zappos employee is less than 36 years old. A random sample of 22 Zappos employees was found to have an average age of 33.9 years. The standard deviation for this sample was 4.1 years. Amazon would like to set α = 0.025. The correct hypothesis statement for this hypothesis test would be A)  H0: μ = 33.9; H1: μ ≠ 33.9. B)  H0: μ = 36; H1: μ ≠ 36. C)  H0: μ ≤ 36; H1: μ > 36. D)  H0: μ ≥ 36; H1: μ < 36.

A set of exam scores is normally distributed with a mean = 82 and standard deviation = 6.Use the Empirical Rule to complete the following sentences.68% of the scores are between and .95% of the scores are between and .99.7% of the scores are between and .

Need help with C, D and H   please

The average number of accidents at controlled intersections per year is 5.6. Is this average a different number for intersections with cameras installed? The 67 randomly observed intersections with cameras installed had an average of 5.8 accidents per year and the standard deviation was 0.6. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer v H1: ? v Select an answer V c. The test statistic ? V = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... the null hypothesis. The data suggest that the population mean is not significantly different from 5.6 at a = 0.01, so there is statistically insignificant evidence to conclude that the population mean number of accidents per year at…

The average salary for American college graduates is $44,300. You suspect that the average is different for graduates from your college. The 61 randomly selected graduates from your college had an average salary of $44,099 and a standard deviation of $4,460. What can be concluded at the a = 0.10 level of significance? a. For this study, we should useSelect an answer b. The null and alternative hypotheses would be: Họ: vSelect an answer H: ? vSelect an answer c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is va the null hypothesis. f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... O The data suggest that the population mean is not significantly different from 44,300 at a = 0.10, so there is statistically insignificant evidence to conclude that the population mean salary for graduates from your college is different from 44,300. The data suggest that…

▼ Part 1 of 4 Londell, an accomplished marathon runner, claims that the standard deviation for his time to run a 26.2 mile marathon is less than 11.1 minutes. To test his claim, Londell looks up 17 of his race times (in minutes): 238.6, 240, 231.4, 241.4, 251.9, 230.4, 232.1, 235.7, 234.6, 242.9, 240.5, 237.6, 242.2, 245.7, 235.7, 240.2, 233.9 Perform a hypothesis test using a 1% level of significance to test Londell's claim. Step 1: State the null and alternative hypotheses. Ho:o 11.1 Ha:o

In 2017, the SAT was scored out of 1600. The average SAT scores among the 925 Texas students who stated their intended major was Mathematics was 1148. The average SAT score among the 1026 Texas students who stated their intended major was History was 1031. Assume the true standard deviation for both populations is 193. (a.) Test the hypothesis at the 1% significance level that future Texas math majors had a higher SAT score on average in 2017 than future Texas history majors. (b.) Find a 98% confidence interval for the difference in their SAT scores (Let μ1 be the mean math major score and μ2 be the mean history major score).

A survey of nonprofit organizations showed that online fundraising increased in the past year. Based on a random sample of 53 nonprofit​ organizations, the mean​ one-time gift donation in the past year was $80​,with a standard deviation of ​$13. . If you test the null hypothesis at the 0.05 level of​ significance, is there evidence that the mean​ one-time gift donation is greater than ​$75​? a. State the null and alternative hypotheses. Choose the correct answer below. b. Find the test statistic. c. Find the​ p-value for this hypothesis test.

A set of exam scores is normally distributed with a mean = 76 and standard deviation = 10.Use the Empirical Rule to complete the following sentences.68% of the scores are between     and    .95% of the scores are between     and     .99.7% of the scores are between     and     .