Hw - Speech or Presentation Example

STAT 200 - Introduction to Statistics Quiz 6 Prof. Minhtri Ho MULTIPLE CHOICE. Choose the one alternative that best completes the ment or answers the question. Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol for the indicated parameter. 1) 
An entomologist writes an article in a scientific journal which claims that fewer than 16 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light. 
1) 
_______ A) 
: p < 0.

0016: p ≥ 0.0016 
B) 
: p = 0.0016: p < 0.0016 
C) 
: p = 0.0016: p > 0.0016 
D) 
: p > 0.0016: p ≤ 0.0016 ANSWER IS A Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis). 2) 
The test statistic in a right-tailed test is z = 0.52. 
2) 
_______ A) 
0.3015; reject the null hypothesis 
B) 
0.6030; fail to reject the null hypothesis C) 
0.

0195; reject the null hypothesis 
D) 
0.3015; fail to reject the null hypothesis ANSWER IS CFind the P-value for the indicated hypothesis test. 3) 
A medical school claims that more than 28% of its students plan to go into general practice. It is found that among a random sample of 130 of the schools students, 32% of them plan to go into general practice. Find the P-value for a test of the schools claim. 
3) 
_______ A) 
0.3461 
B) 
0.1539 
C) 
0.3078 
D) 
0.1635 ANSWER IS B Find the critical value or values of based on the given information. 4) 
: σ = 8.

0n = 10α = 0.01 
4) 
_______ A) 
23.209 
B) 
1.735, 23.589 
C) 
21.666 
D) 
2.088, 21.666 ANSWER IS B SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use either the traditional method or P-value method as indicated. Identify the null and alternative hypotheses, test statistic, critical value(s) or P-value (or range of P-values) as appropriate, and state the final conclusion that addresses the original claim. 5) 
Use a significance level of α = 0.

01 to test the claim that μ > 2.85. The sample data consist of 9 scores for which = 3.13 and . Use the traditional method of testing hypotheses. 
5) 
_____________ The null hypothesis Ho: μ > 2.85The alternative hypothesis H1: μ