Statistics
Instructions Multiple Attempts This test allows 2 attempts. This is attempt number 1. Force Completion This test can be saved and resumed later. Your answers are saved automatically. Question Completion Status: Close Window A Moving to another question will save this response. > Question 3 2.5 points Save Answer Which of the following is true? A. To minimize the risk of making a Type I error, we can raise the level of significance, alpha. The best way to minimize the risk of making a Type II error is to use a smaller sample size. B. To minimize the risk of making a Type | error, we can lower the level of significance, alpha. The best way to minimize the risk of making a Type ll error is to use a larger sample size. O C. To minimize the risk of making a Type I error, we can lower the level of significance, alpha. The best way to minimize the risk of making a Type ll error is to use a smaller sample size. OD. To minimize the risk of making a Type I error, we can raise the level of significance, alpha. The best way to minimize the risk of making a Type II error is to use a larger sample size. A Moving to another question will save this response. > Close Window K DIL DD Q F11 F12 80mpt number 1. Force Completion This test can be saved and resumed later. Your answers are saved automatically. Question Completion Status: Close Window A Moving to another question will save this response. > Question 2 2.5 points Save Answer Consider the following null and alternative hypotheses: Ho: The proportion of Americans who believe in UFO's is 0.25. Ha: The proportion of Americans who believe in UFO's is less than 0.25. . Which of the following is a true statement when alpha=0.05? O A. When the null hypothesis is true, there is a 5% chance of making a type | error. This means we reject the notion that 0.25 of Americans believe in UFOs. O B. When the null hypothesis is true, there is a 5% chance of making a type II error. This means we fail to reject the notion that 0.25 of Americans believe in UFOs. O C. When the null hypothesis is true, there is a 5% chance of making a type ! error. This means we fail to reject the notion that 0.25 of Americans believe in UFOs. O D. When the null hypothesis is true, there is a 5% chance of making a type II error. This means we reject the notion that 0.25 of Americans believe in UFOs. > A Moving to another question will save this response. > Close WindowClose Window > A Moving to another question will save this response. Question 1 of 4 > Question 1 12.5 points Save Answer big landed on its feet 1052 times. In a scholarly article from the Journal of Statistics Education, entitled Pig Data and Bayesian Inference on Multinomial Probabilities, the author states that, after rolling a pig die 11,954 times, the Find the sample proportion, "p-hat" = (Round to three decimal places) What is the critical value that corresponds to a 95% level of confidence? Zc = (Round to three decimal places) Calculate the confidence interval : ( ) (Round both numbers to three decimal places) Would you support the claim that 10% of all tosses have the pig landing on its feet? ( 1 =yes , 2 = no ) Use of this MS Excel Template may be helpful: ConfidenceIntervals2.xIsx Moving to another question will save this response. Question 1 of 4 > >> Close Window 40 DV F10 FM1 F12 * O
