If your null and alternative hypothesis are. Ho:P1 = P2 H1:Pi < P2 Then the test is: | left tailed | two tailed O right tailed
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- 12) The personnel director for a small firm thinks that employees may be more likely to use sick days on Monday and Friday resulting in three-day weeks. a) What is the appropriate null and alternate hypothesis to determine if sick day absences depend on day of the week? b) The personnel director obtains sick day data for the past year and summarizes the number of absences by day of the week in the table below. Use JMP software to test the hypothesis of part a) c) Using alpha = 0.05, draw a conclusion for the hypothesis test and state the conclusion in the context of the problem. Day of Week Absences Monday 126 Tuesday 74 Wednesday 91 Thursday 82 Friday 1153. A researcher is testing a two-tailed null hypothesis at the p < .01 level with df = 45. What critical value would she or he use? Justify your answerIf the value of z=1.27 with 95% confidence to the right tail. What is the correct decision with the null hypothesis?* A. z = 1.27 is in the Rejection Region B. z = 1.28 is in the Acceptance Region C. z = 1.28 is in the Stable Region D. cannot be determined
- Which of the following statements is true if when using null hypothesis testing, our p value (in the "sig" column of SPSS output) is 0.051? Reject the null hypothesis Fail to reject the null hypothesis Reject the alternative hypothesis Fail to reject the alternative hypothesis1) The manager at Gre3n randomly samples 50 glass juicing bottles of hemp seed smoothies. The manager is concerned that the glass juicing bottles may be filled to an amount different from 24 ounces. a) State suitable null and alternative hypotheses. b) How can the manager make a Type I error? c) How can the manager make a Type II error? d) Will the hypothesis test procedure prove that the glass juicing bottles are filled to an amount different from 24 ounces?In a random sample, 12 of 14 industrial accidents weredue to unsafe working conditions. Use the 0.01 level ofsignificance to test the null hypothesis θ = 0.40 againstthe alternative hypothesis θ Z 0.40.
- When is a researcher at risk of making a Type II error? a. whenever H0 is rejected b. whenever H1 is rejected c. whenever H0 fails to be rejected d. The risk of a Type II error is independent of the decision from a hypothesis test.The test statistic of z=2.19 is obtained when testing the claim that p>0.1. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-value. c. Using a significance level of α=0.05, should we reject H0 or should we fail to reject H0?An education council says that 22% of undergraduates do not work, 26 % work 1 to 20 hours per week, 18% work 21 to 34 hours per week, and 34% work 35 or more hours per week. You randomly select 120 college students and gather the results shown in the table below. At alpha = 0.01 can you reject the council`s claim. Response Did not work 29 Work 1 to 20 hours 26 Work 21 to 34 hours 25 Work 35 or more hours 40 State the null and alternative hypothesis Give the p-value Give a conclusion for the claim
- When is a researcher at risk of making a Type II error? Group of answer choices: whenever H0 is rejected whenever H1 is rejected whenever H0 fails to be rejected The risk of a Type II error is independent of the decision from a hypothesis test.When is a researcher at risk of making a Type II error? a. whenever H1 is rejected b. whenever H0 fails to be rejected c. whenever H0 is rejected d. The risk of a Type II error is independent of the decision from a hypothesis test.The test statistic of z = 2.22 is obtained when testing the claim that p ne0.492. a . Identify the hypothesis test as being two-tailed, left-tailed, or right- tailed b. Find the P-value. c . Using a significance level of alpha = 0.01 , should we reject H_{0} or should we fail to reject H_{0} ?