A social media company stores user information in a database, such as first name, last name, e-mail address, number of posts, hours of time spent using the app version (to the nearest hundredth of an hour), hours of time spent using the desktop version (to the nearest hundredth of an hour), number of likes, occupation, favorite movie, number of followers, and favorite song. Which of the listed variables are discrete numerical variables? a. number of posts, number of likes, number of followers b. number of posts, number of likes, number of followers, hours of timespent using the app version (to the nearest hundredthof ani hour), hours of time spent using the desktop version (to the nearest hundredth of an hour) c. hours of time spent using the app version (to the nearest hundredth of an hour), hours of time spent using the desktop version (to the nearest hundredth of an hour) d. e-mail address, hours of time spent using the app version (to the nearest hundredth of an hour), hours of time spent using the desktop version (to the nearest hundredth of an hour)

The grades on the second statistics test for Mr. Brown's class are in the following list. Find the frequency distribution for the grades. \[ F, C, B, D, D, A, F, B, B, D, F, D, D, B, B, D, B, A, D, F, D \]

Supstion 5 of 19, Step 1 of 1 percentage of American women have shoe sizes that are greater than 9.58 ? Please do not round your answer. Answer How to enter your answer (opens in new window)

The grades on the second statistics test for Mr. Brown's class are in the following list. Find the frequency distribution for the grades. \[ \text { C, D, B, F, B, A, F, F, B, B, B, F, D, B, F, D, F, B, F, B, C } \]

Scores on a test have a mean of 89 and a standard deviation of 7 . Calvin has a score of 79. Convert Calvin's score to a \( z \)-score, rounded to the nearest hundredth.

A water bottling facility has a mean bottling rate of 34.1 thousand bottles per hour with a standard deviation of 2.13 thousand bottles. A nearby cola bottling facility has a mean bottling rate of 25.7 thousand bottles per hour with a standard deviation of 1.63 thousand bottles. One Wednesday from noon to \( 1: 00 \) p.m, the water bottling facility bottled 37.2 thousand bottles of water, and the cola bottling facility bottled 27.7 thousand bottles of cola. Which facility increased their efficiency more during that hour? Answer