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Author Question: In the past, the average age of employees of a large corporation has been 40 years. Recently, the ... (Read 37 times)

ahunt13

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on: Mar 25, 2023

Question 1

In the last presidential election, a national survey company claimed that no more than 50% (i.e., < 50%) of all registered voters voted for the Republican candidate. In a random sample of 400 registered voters, 208 voted for the Republican candidate.

a.State the null and the alternative hypotheses.
b.Compute the test statistic.
c.At 95% confidence, compute the p-value and test the hypotheses.



Question 2

In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older individuals. In order to determine whether there has been an increase in the average age of all the employees, a sample of 64 employees was selected. The average age in the sample was 45 years with a standard deviation of 16 years. Let α = .05.

a.State the null and the alternative hypotheses.
b.Compute the test statistic.
c.Using the p-value approach, test to determine whether or not the mean age of all employees is significantly more than 40 years.

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by ahunt13 on Mar 25, 2023

annaelena92

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Reply #1 on: Mar 25, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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ahunt13

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Reply 2 on: Mar 25, 2023
Gracias!

xthemafja

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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