CH 10 BANA

hypothesis testing with two populations

Chapter 10's primary focus is

1.645

Refer to Question 1. At 0.05 level of significance what is the critical value associated with this hypothesis test? Round your answer to three decimal places.

.023

Refer to Question 1. What is the p-value associated with the test statistic? Round your answer to three decimal places.

4

Refer to Question 1. What is the standard error of the estimate of the difference between the means? Round your answer to three decimal places.

.3

Refer to Question 1. What is the value of the pooled proportion? Round your answer to three decimal places.

1.179

Refer to Question 2. The null hypothesis to be tested is H0: ud = 0. What is the value of the test statistic? Round your answer to three decimal places.

3.92

Refer to Question 4. At a 95% confidence level, what is the margin of error associated with the point estimate? Round your answer to two decimal places.

null hypothesis should not be rejected

Refer to Question 4. Based on the test statistic, the

less than 0.001

Refer to Question 4. The p-value is

The test is inconclusive.

Refer to Question 5. What is your conclusion?

.75

Refer to Question1. If you are testing to determine if Population 1 has a larger mean than Population 2, what is the value of the test statistic? Round your answer to three decimal places.

11.372

Refer to Questions 1 & 2 and use 19.48 as the degrees of freedom. What is the upper limit for the 95% confidence interval for the difference between the two population means? Round your answer to three decimal places.

.0278

Refer to Questions 1 and 2. Determine the value of the standard error of the difference in the proportions. Round your answer to four decimal places.

reject the null hypothesis

Refer to Questions 1 and 5. If alpha is .05, the correct conclusion is

average time of Process B is significantly greater than Process A.

Refer to Questions 1, 2 & 3. The appropriate conclusion is the

3.964

Refer to Questions 1, 2 and 3. What is the value of the test statistic? Round your answer to three decimal places.

.283

Refer to Questions 2 & 3. What is the p-value associated with the test statistic? Round your answer to three decimal places

.231

Refer to Questions 3 & 4, what is the p-value associated with the test statistic? Round your answer to three decimal places

7.92

Refer to Questions 4 & 5. What is the upper limit for a 95% confidence interval of the difference in the means? Round your answer to two decimal places.

new drug testing

The Statistics in Practice example in Chapter 10 identifies an application concerned with

U.S. Food & Drug Administration

The company identified in Chapter 10, Statistics in Practice is

matched samples

When each data value in one sample is matched with a corresponding data value in another sample, the samples are known as