The mean incubation time for a type of fertilized egg kept at a certain temperature is 17 days. Suppose that the incubation fimes are approximately normally distributed with a standard deviation of 2 days. Complete parts (a) through (e) below. B. If 100 fertilized eggs were randomly selected, 48 of them would be expected to hatch between 13 and 17 days. C. If 100 fertilized eggs were randomly selected, exactly would be expected to hatch on day 13 or on day 100 fertilized eggs, 17 eggs would be expected to hatch between 13 and 17 days. (e) Would it be unusual for an egg to hatch in less than 11 days? Why? The probability of an egg hatching in less than 11 days is \( \square \), so it \( \square \) be unusual, since the probability is \( \square \) than 0.05. (Round to four decimal places as needed.)

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

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

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

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.52 and a standard deviation of 0.41 . Using the empirical rule, what percentage of the students have grade point averages that are greater than 3.34 ? Please do not round your answer. Answer How to enter your answer (opens in new window)

Find the range of the following data set. Assume the data set is a sample. \[ 43 \quad \begin{array}{lllllllll}54 & 51 & 86 & 39 & 51 & 52 & 45 & 81 & 46\end{array} 46 \]