Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25,...

Chapter 10
6. Test H₀: 8 versus H_A: > 8, given = 0.01, n = 25, = 8.13 and s = 0.3. Assume the sample is selected from a normally distributed population.

7. Test H₀: π = 0.25 versus H_A: π 0.25 with p = 0.33 and n = 100 at alpha = 0.05 and 0.10.

8. Test at α = 0.01 the hypothesis that a majority (more than 50%) of students favor the plus/minus grading system at a university if in a random sample of 500 students, 285 favor the system?

9. Test whether the sample evidence indicates that the average time an employee stays with a company in their current positions is less than 3 years when a random sample of 64 employees yielded a mean of 2.76 years and s = 0.8. Use = 0.01. Assume normal distribution.

Solutions

Expert Solution

orchestra answered 2 years ago

Next > < Previous

Related Solutions

Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25,...

Chapter 10 6. Test H0: 8 versus HA: > 8, given = 0.01, n = 25, = 8.13 and s = 0.3. Assume the sample is selected from a normally distributed population. 7. Test H0: π = 0.25 versus HA: π 0.25 with p = 0.33 and n = 100 at alpha = 0.05 and 0.10. 8. Test at α = 0.01 the hypothesis that a majority (more than 50%) of students favor the plus/minus grading system at a university...

Test H0: m £ 8 versus HA: m > 8, given a = 0.01, n =...

Test H0: m £ 8 versus HA: m > 8, given a = 0.01, n = 25, X ̅ = 8.13 and s = 0.3. Assume the sample is selected from a normally distributed population.

A test of H0: p = 0.4 versus Ha: p > 0.4 has the test statistic...

A test of H0: p = 0.4 versus Ha: p > 0.4 has the test statistic z = 2.52. Part A: What conclusion can you draw at the 5% significance level? At the 1% significance level? (6 points) Part B: If the alternative hypothesis is Ha: p ≠ 0.4, what conclusion can you draw at the 5% significance level? At the 1% significance level? (4 points) (10 points)

We want to test H0 : µ ≥ 200 versus Ha : µ < 200 ....

We want to test H0 : µ ≥ 200 versus Ha : µ < 200 . We know that n = 324, x = 199.700 and, σ = 6. We want to test H0 at the .05 level of significance. For this problem, round your answers to 3 digits after the decimal point. 1. What is the value of the test statistic? 2. What is the critical value for this test? 3. Using the critical value, do we reject or...

For a test of population proportion H0: p = 0.6 versus Ha: p ≠0.6 , the...

For a test of population proportion H0: p = 0.6 versus Ha: p ≠0.6 , the test statistic equals 1.21. Find the P-value for this test.

2.In a test of the hypothesis H0: μ = 50 versus Ha: μ < 50, a...

2.In a test of the hypothesis H0: μ = 50 versus Ha: μ < 50, a sample of 40 observations is selected from a normal population and has a mean of 49.0 and a standard deviation of 4.1. a) Find the P-value for this test. b) Give all values of the level of significance α for which you would reject H0. 3.In a test of the hypothesis H0: μ = 10 versus Ha: μ≠ 10, a sample of 16 observations...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of 40 provided a sample mean of 26.1. The population standard deviation is 6. (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) p-value = (c) At α = 0.01,state your conclusion. (d) State the critical values for the rejection rule. (Round your answer to two decimal places....

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of 40 provided a sample mean of 26.6. The population standard deviation is 6. (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) 1) p-value = (c) At α = 0.01, state your conclusion. 1) Reject H0. There is sufficient evidence to conclude that μ > 25. 2) Reject...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of 40 provided a sample mean of 26.6. The population standard deviation is 6. (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) p-value = (c) At α = 0.01,state your conclusion. Chose one of the following. Reject H0. There is sufficient evidence to conclude that μ >...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of...

Consider the following hypothesis test. H0: μ ≤ 25 Ha: μ > 25 A sample of 40 provided a sample mean of 26.4. The population standard deviation is 6. (a) Find the value of the test statistic. (Round your answer to two decimal places.) (b) Find the p-value. (Round your answer to four decimal places.) p-value = (c) At α = 0.01, state your conclusion. Reject H0. There is sufficient evidence to conclude that μ > 25.Reject H0. There is...

Subjects