Ms Pitts has 220 students in her class. She would like to select a systematic sample of 20 students to answer a questionnaire. She numbers the students as they enter the lecture venue i.e. the \( 1^{\text {st }} \) student to enter gets assigned the number 1 , the \( 2^{\text {nd }} \) student to enter is assigned the number 2 etc. Ms Pitts randomly selects Student 10 to be the first student in her sample. Which student is the fourth to be selected for the sample? a) Student 11 b) Student 32 c) Student 43 d) Student 20 e) Student 30

Determine whether the following statement makes sense or does not make sense. Although the data set \( 5,5,6,6,6,7,7,7 \) has a number of repeated items, there is only one mode. Choose the correct answer below. A. The statement does not make sense because there are no modes in the data set. B. The statement makes sense because there is 1 mode in the data set. C. The statement does not make sense because every value is a mode in the data set. D. The statement does not make sense because there are 2 modes in the data set.

Suppose you are interested in whether or not the students at your high school would favor a grading system in which students may receive final grades of \( \mathrm{A}+, \mathrm{A}, \mathrm{A}-, \mathrm{B}+, \mathrm{B}, \mathrm{B}-, \mathrm{C}+, \mathrm{C}, \mathrm{C}- \), and so on. Describe how you might obtain a random sample of 100 students from the entire student population. Choose the correct answer below. A. Assign each student at the school a number, write each number on a card, and place all of the cards in a box. Then, randomly select 100 cards. B. Post an advertisement requesting the assistance of 100 students. Among the first 100 students to arrive, select them in a random order. C. Sort the students by their overall average grades. Then, select the 50 students with the best grades and the 50 students with the worst grades. D. Determine the ten streets on which the most students at the school live. Then, select ten students from each street. If fewer than ten students live on a street, fill in the spot with a randomly selected student.

\#3 A set of data has correlation coefficient \( r \). For which value of \( r \) would the average magnitude of the residuals be the largest? a. \( r=-0.516 \) b. \( r=-0.445 \) c. \( r=0.875 \) d. \( r=0.158 \)

Determine whether the statement is true or false. If the statement is false, make the necessary change(s) fo produce a true statement. When finding the mean, it is necessary to arrange the data items in order. Choose the correct answer below. A. The statement is true. B. The statement is false. To make the statement true, change "mean" to "median", C. The statement is false. To make the statement true, change "mean" to "mode", D. The statement is false. To make the statement true, change "mean" to "median" and add "not" between "is" and "necessary",

Based on a sample of 70 people, the sample mean GPA was 3.43 with a standard deviation of 0.03 The p-value is: \( \square \) (to 2 decimals)