Inferential and Predictive Statistics for Business

8. Question 8 What is the t-value when testing the following hypotheses and sample data: H_{0}: μ = 180H0​:μ=180 H_{a}: μ ≠ 180Ha​:μ​=180 α = 0.05, x̄ = 183.6, s…

5. Question 5 What does the p-value signify? 1 point   The largest chance of a Type II error if H_{0}H0​ is rejected based on the sample statistics.   The…

9. Question 9 For a sample of 160 observations, the t-value for the observed sample mean is 1.29. If we are doing a one-tail test, then the p-value is ___________….

6. Question 6 The t-value (test statistic) is equal to ___________. 1 point   The number of standard errors the sample mean is away from the hypothesized mean   The…

4. Question 4 False positive ___________. 1 point   Is a Type II error   Is a Type I error   Occurs in a medical setting   Is a Type…

7. Question 7 Rejecting a null hypothesis after hypothesis testing means that the null hypothesis is true. 1 point   Yes   No

3. Question 3 The sum of confidence level and significance level (α) is always equal to ___________. 1 point   α   1 – α   0   1

2. Question 2 If the null hypothesis states a specific value for the population parameter, then it is a ____________. 1 point   One-tail test   Two-tail test   Possibly…

1. Question 1 The null hypothesis (H_{0}H0​) and the alternate hypothesis (H_{a}Ha​) are __________. 1 point   Mutually exclusive but do not collectively cover all possibilities   Not mutually exclusive…