Question

1. Use the degree of confidence and sample data to construct a 95% confidence interval for the population proportion. A survey of 200 union members in New York reveals that 112 favor the Republican candidate for governor. A) (0.50, 0.62) B) (0.49, 0.63) C (0.47, 0.65) D) (0.48, 0.64) E) None of the Above 2. Find the t critical value for a left tailed test at a 0.1 level of significance and df = 11. A) 1.80 B) 1.36 C) 2.72 D) -1.36 E) None of the Above 3. Find the z critical value for a right tailed test with n = 23,0.05, a = 0.01 A) 2.33 B) 1.645 C) -1.645 D) -2.33 E) None of the Above 4. Classify the hypothesis test as left-tailed, right-tailed, or two tailed: The mean daily animal dog food consumption at a local rescue is 68 pounds. The owner/operator wants to know if that has increased. A) Left-tailed B) Right-Tailed C) Multi-tailed D) Right-Tailed 5. Suppose you pay $2.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 4 or a 2, nothing otherwise. What is the expected amount you win (or lose)? A) $-1.00 B) S-0.33 C) S-2.33 D) S-1.33 E) None of the Above

Answer 1

X=112 na 100 Pa X 119 200 : 0.56 954. C-1. X-005 H-0,975 from antable alla 0.015 close to 2:1.96 C-1) Å = 2h n 0.56 (0.44) 0.56*(1-96) 0:56 0.07 lowen bound : 0:56 -0.017 : 0.48 uppen bound : 0.56 +0:07: 0.63 B) (0-49, 0.63) 20.1. DE From t-table at d=o.l, dfall te - 1.36 3) (Right tail) 1-0.99 from a-rable area 0.99 close to 2: 2-33 Claim is owner wants to know if it has increased Ho : 4:68 HU68 d) Right tailed. {"pis upload only 10 at a time ime]