1.Which of the following statements is correct? A The p-value changes when your data changes and so does your value of alpha. B The p-value changes when your data changes, but the value of alpha stays the same. C The p-value does not change when your data changes, and neither does your value of alpha. D The p-value does not change when your data changes, but your value of alpha does. 2. Suppose your p-value is 0.13 and your significance level is 0.10. What do you decide? Group of answer choices A Accept Ho B None of the other choices is correct C Fail to reject Ho D Fail to reject Ho or Accept Ho, they both mean the same thing E Not enough information to tell - need to know Ha. 3. Suppose X has a normal distribution with mean 15 and standard deviation 5. What is the probability that X is between 10 and 22? Choose the closest answer. Group of answer choices A 0.90 B 0.75 C 0.60 D 0.45 4. Which of the following statements is false? Group of answer choices A Statement 3: The degrees of freedom for a t distribution is n-1 B Statement 1: The smaller n is, the closer the t-distribution is to the Z distribution. C All of the 3 statements are false. D Statement 2: The t-distribution has a mean of 0. E None of the 3 statements is false. 5. Which of the following statements is false? Group of answer choices A.Statement 3: If X-has a normal distribution, X-bar is normal only if n > 30. B.Statement 1: The standard error of X-bar is equal to the standard deviation of X C.Statement 2: Suppose X has a non-normal distribution, Then X-bar has a normal distribution for any n by the CLT. D.All of the 3 statements are false. E. None of the 3 statements are false. 6. Suppose you surveyed 1000 randomly chosen people from your population and you found that 25% of them live in a rural area. You want to estimate the proportion of people who live in a rural area using your data. What is the margin of error? Choose the closest answer. Group of answer choices A 0.01 B Not enough information to tell. C 0.03 D 0.02 E 0.05 7. X has a uniform distribution from 10 to 20. What is f(x)? Group of answer choices A 1/10 B Not enough information to tell. C 0 D 1/20 8. Suppose 90% of students own an iPad. You take a random sample of 2 OSU students and let X = the number of students in the sample who own an iPad. What's the chance that X is exactly 1? Group of answer choices A Not enough information to tell. B 0.18 C 0.90 D 0.19 E 0.09 9. A confidence interval for mu when sigma is unknown (using t) is wider than a confidence interval for mu when sigma is known (using Z). Group of answer choices A True B False 10. Suppose someone reports that the average gas price in Ohio is $3.85 and you believe it's less than that. You sample 31 gas stations at random in Ohio and calculate the sample mean, $3.77, and sample standard deviation, $0.35. What is the test statistic? Group of answer choices A -1.27 B 3.77 C Not enough information to tell. D 1.27 E -.23 11. Which of the following statements is FALSE? Group of answer choices A Statement 2: The margin of error decreases if the standard deviation were to decrease. B None of these three statements are false. C Statement 1: The margin of error increases if n were to increase. D Statement 3: The margin of error decreases if the confidence level decreases. E All three statements are false