Suppose that out of 1200 students at your university, 100 are on a break and not taking any classes this semester. Which of the following mathematical expressions describes the mean of the sampling distribution of the proportion of students who are on a break? Select one: O a. 100 / 1200 O b. 100 x 1200 O c. (1200 - 100) / 100 d. (1200 - 100) / 1200

Teachers want to know which night each week their students are doing most of their homework. Most teachers think that students do homework equally throughout the week. Suppose a random sample of 56 students were asked on which night of the week they did the most homework.  Please use the data below to test whether the night that students reported doing most of their homework was equally distributed across the 7 days.     Sunday Monday Tuesday Wed. Thursday Friday Saturday Number of students 12 8 11 7 12 3 3   a. Find the expected valuesb. What is the df and critical value for the study with an alpha level of .05?c. State the two hypothesesd. Perform a chi square goodness of fit teste. Report the results in sentence and numbers in APA format.

Suppose you are interested in knowing the proportion of Texas A&M students who have their own subscription to Netflix.  Everyone in a class of 77 students takes a random sample of 100 Texas A&M students and asks them if they have their own Netflix subscription. Each person calculates the proportion of their sample with a subscription and we make a histogram of the 77 proportions.  What kind of distribution would be displayed in that histogram?    a. Population Distribution   b. Sampling Distribution   c. Data Distribution   d. Parent Distribution   e. More than one of the above

Save Suppose a random sample of n = 390 teenagers 13 to 17 years of age was asked if they use social media. Of those surveyed, 276 stated that they do use social media. Find the sample proportion of teenagers 13 to 17 years of age who use social media. The sample proportion is p= (Round to three decimal places as needed.)