6) A sample of 40 observations is selected from a normal population. The sample mean is...
6) A sample of 40 observations is selected from a normal population. The sample mean is 31, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.05 significance level.
a) Is this a one or two- tailed test?
b) What is the decision rule? (Round your answer 2 decimal places)
_____ HO, when z > ______
c) What is the value of the test statistic?
Value of the test statistic ______
d) What is your decision regarding
Ho? ___ Do not reject ___ Reject There is ____ evidence to conclude that the population mean is greater than 30.
e) What is the p-value? (Round your answer to 4 decimal places) p-value _______
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6) A sample of 40 observations is selected from a normal
population. The sample mean is...
A sample of 37 observations is selected from a normal population. The sample mean is 29,...
A sample of 37 observations is selected from a normal population. The sample mean is 29, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 26 H1 : μ > 26 a. Is this a one- or two-tailed test? "One-tailed"-the alternate hypothesis is greater than direction. "Two-tailed"-the alternate hypothesis is different from direction. b. What is the decision rule? (Round your answer to 3 decimal places.)...
A sample of 35 observations is selected from a normal population. The sample mean is 26,...
A sample of 35 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 25 H1 : μ > 25 A.) Is this a one- or two-tailed test? "Two-tailed"-the alternate hypothesis is different from direction. "One-tailed"-the alternate hypothesis is greater than direction B.) What is the decision rule? (Round your answer to 3 decimal places.) H0,...
A sample of 71 observations is selected from a normal population. The sample mean is 24,...
A sample of 71 observations is selected from a normal population. The sample mean is 24, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 23 H1 : μ > 23 a. Is this a one- or two-tailed test? (Click to select) One-tailed test Two-tailed test b. What is the decision rule? (Round the final answer to 3 decimal places.) (Click to select) Reject Accept H0 and (Click to select) accept reject H1 when z > ....
A sample of 35 observations is selected from a normal population. The sample mean is 16,...
A sample of 35 observations is selected from a normal population. The sample mean is 16, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. Họ: H = 15 Hi: 4 > 15 a. Is this a one-or two-tailed test? One-tailed test Two-tailed test b. What is the decision rule? Reject Ho when z> 1.645 Reject Ho when zs 1.645 c. What is the value of the test statistic? (Round your...
A sample of 48 observations is selected from a normal population. The sample mean is 57,...
A sample of 48 observations is selected from a normal population. The sample mean is 57, and the population standard deviation is 6 Conduct the following test of hypothesis using the 0.01 significance level. Ho: H58 H1: H58 a. Is this a one- or two-tailed test? O One-tailed test O Two-tailed test b. What is the decision rule? Reject Ho if -2.576 < z < 2.576 Reject Ho if z<-2.576 or z> 2.576 c. What is the value of the...
A sample of 44 observations is selected from a normal population. The sample mean is 46,...
A sample of 44 observations is selected from a normal population. The sample mean is 46, and the population standard deviation is 7. Conduct the following test of hypothesis using the 0.01 significance level. Ho: M = 50 Hu 50 a. Is this a one- or two-tailed test? One-tailed test Two-tailed test b. What is the decision rule? Reject Ho if -2.576 <z<2.576 Reject Ho if z<-2.576 or z> 2.576 c. What is the value of the test statistic? (Negative...
Exercise 10-3 (LO10-4) A sample of 33 observations is selected from a normal population. The sample...
Exercise 10-3 (LO10-4) A sample of 33 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. H1: μ > 29 a. Is this a one- or two-tailed test? One-tailed" the alternate hypothesis is greater than direction. "Two-tailed"-the alternate hypothesis is different from direction. o. What is the decision rule? (Round your answer to 3 decimal places.) Reject when 1.645...
A sample of 35 observations is selected from a normal population. The sample mean is 29,...
A sample of 35 observations is selected from a normal population. The sample mean is 29, and the population standard deviation is 2. Conduct the following test of hypothesis using the 0.02 significance level. H0: ? ? 28 H1: ? >28 1. a. Is this a one- or two-tailed test? Two-tailed test One-tailed test 2. b. What is the decision rule? Reject H0 when z ? 2.054 Reject H0 when z > 2.054 3. c. What is the value of...
A sample of 37 observations is selected from a normal population. The sample mean is 21,...
A sample of 37 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.02 significance level. H0: μ ≤ 20 H1: μ > 20 Is this a one- or two-tailed test? One-tailed test Two-tailed test What is the decision rule? Reject H0 when z > 2.054 Reject H0 when z ≤ 2.054 What is the value of the test statistic? (Round your...
A sample of 64 observations is selected from a normal population. The sample mean is 215,...
A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the 0.03 significance level: HO: u? 220 H1 : < 220 a. Is this a one-or two-tailed test? Two-tailed b. What is the decision rule? (Negative answer should be indicated by a minus sign. Round the final answer to 2 decimal places.) (Click to select) v Ho when z< D...
A sample of 35 observations is selected from a normal population. The sample mean is 16, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. Họ: H = 15 Hi: 4 > 15 a. Is this a one-or two-tailed test? One-tailed test Two-tailed test b. What is the decision rule? Reject Ho when z> 1.645 Reject Ho when zs 1.645 c. What is the value of the test statistic? (Round your...
A sample of 48 observations is selected from a normal population. The sample mean is 57, and the population standard deviation is 6 Conduct the following test of hypothesis using the 0.01 significance level. Ho: H58 H1: H58 a. Is this a one- or two-tailed test? O One-tailed test O Two-tailed test b. What is the decision rule? Reject Ho if -2.576 < z < 2.576 Reject Ho if z<-2.576 or z> 2.576 c. What is the value of the...
A sample of 44 observations is selected from a normal population. The sample mean is 46, and the population standard deviation is 7. Conduct the following test of hypothesis using the 0.01 significance level. Ho: M = 50 Hu 50 a. Is this a one- or two-tailed test? One-tailed test Two-tailed test b. What is the decision rule? Reject Ho if -2.576 <z<2.576 Reject Ho if z<-2.576 or z> 2.576 c. What is the value of the test statistic? (Negative...
Exercise 10-3 (LO10-4) A sample of 33 observations is selected from a normal population. The sample mean is 30, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. H1: μ > 29 a. Is this a one- or two-tailed test? One-tailed" the alternate hypothesis is greater than direction. "Two-tailed"-the alternate hypothesis is different from direction. o. What is the decision rule? (Round your answer to 3 decimal places.) Reject when 1.645...
A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the 0.03 significance level: HO: u? 220 H1 : < 220 a. Is this a one-or two-tailed test? Two-tailed b. What is the decision rule? (Negative answer should be indicated by a minus sign. Round the final answer to 2 decimal places.) (Click to select) v Ho when z< D...
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