For which of the following scenarios can we assume that the sampling distribution of p is approximately normally distributed? I. n = 25 andp = 0.6 II. n = 45 and p = 0.8 III. n = 60 and p = 0.9

University students who drink alcohol, usually consume about 6 drinks per week. Given that about 60% of students drink alcohol, what would you predict to be the shape of the distribution of the number of cups drunk for university students (which include those who drink alcohol and those who don't)? Select one: O a. negatively skewed with scores bunched at 6 drinks per week b. normal distribution with one peak at 6 drinks a week leptokurtic with scores bunching around 6 drinks a week O d. positively skewed with scores bunched at 3 drinks a week. O e. bimodal distribution with one peak at zero and another peak at about 6 drinks per week O C.

Select all of the following statements that are true regarding sampling distributions. Select one or more: The standard error of the sampling distribution of the sample proportion increases as the sample size increases. b. The sampling distribution of the sample mean varies less than its parent population. c. A sampling distribution describes how a sample statistic behaves. d. All sampling distributions follow a Normal distribution. a. e. The mean of the sampling distribution for the sample proportion depends on the sample size.

Are phone calls equally likely to occur any day of the week? The day of the week for each of 420 randomly selected phone calls was observed. The results are displayed in the table below. Use an a = 0.05 significance level. a. Complete the rest of the table by filling in the expected frequencies: Frequencies of Phone Calls for Each Day of the Week Outcome Frequency Expected Frequency Sunday 61 Monday 70 Tuesday 69 Wednesday 50 Thursday 40 Friday 64 Saturday 66 b. What is the correct statistical test to use? Select an answer ✓ c. What are the null and alternative hypotheses? Ho: The distribution of phone calls is not uniform over the days of the week. Phone calls and days of the week are dependent. Phone calls and days of the week are independent. O The distribution of phone calls is uniform over the days of the week.