Please answer the following questions. 1. Under what conditions is the mean ofa
ID: 3183258 • Letter: P
Question
Please answer the following questions.
1. Under what conditions is the mean ofa sampling distribution equal to the mean of the population when taking a simple random sample? a) ONLY if n 31 b) ONLY if the population is nomally distributed c) ONLY if either a or b is satisfied (that is that n 31 and/or the population is normal distributed) d) For any size sample 2. Under what conditions is the standard deviation of the sample mean less than the standard deviation of the population, when dealing with a simple random sample a) ONLY if n 31 b) ONLYif the population is normally distributed c) ONLY ifeither a or b is satisfied (that is that n 31 and or the population is nommally distributed) d For any size sample greater than 1. 3. Which of the following changes would result in a LONGER confidence interval? a) Increase your level of confidence b) Increase your sample size c) Decrease the variability of the data d) None of the above 4. The following outputis from an Anderson-Darlingtest completed in Minitab. From this output, is it safe to assume that the sample data used to complete this test is from a normal distribution? Why orwhy not? a. No, because the p-value ofthe Anderson Darling test istoo high b. Yes, because the p-value of the Anderson Darlingtestis high enough c. No, because there are outliers d. This output does not give enough information to determine Probability Plot of Fill (ounces) RI (ounces)Explanation / Answer
1)a)For sample size n>31
2)d)For any sample size>1
3)a)Increase the level of confidence
4)b)Yes because the p value is high enough
5)a)Type 1 error
5)C)divers wearing seatbelt,pvalue=0.5