Pandora, the owner of a food delivery app, knows from experience that the time needed to assemble a food delivery is normally distributed with a mean of 30 minutes and standard deviation of 5 minutes. A. Find the proportion of food deliveries that took less than 15 minutes to assemble. a. 0.98257 b. 0.0746 c. 0.1157 d. 0.00135 B. Find the proportion of food deliveries that took more than 35 minutes to assemble. a. 0.0243 b. 0.75923 c. 0.15866 d. 0.01743 C. Below how many minutes would you find the fastest 20% of food assembly times? (i.e., find k such that P(food assembly time

Pandora, the owner of a food delivery app, knows from experience that the time needed to assemble a food delivery is normally distributed with a mean of 30 minutes and standard deviation of 5 minutes. A. Find the proportion of food deliveries that took less than 15 minutes to assemble. a. 0.98257 b. 0.0746 c. 0.1157 d. 0.00135 B. Find the proportion of food deliveries that took more than 35 minutes to assemble. a. 0.0243 b. 0.75923 c. 0.15866 d. 0.01743 C. Below how many minutes would you find the fastest 20% of food assembly times? (i.e., find k such that P(food assembly time

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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STATISTICS AND PROBABILITY

MULTIPLE CHOICE

A. Find the proportion of food deliveries that took less than 15 minutes to assemble.

a. 0.98257

b. 0.0746

c. 0.1157

d. 0.00135

B. Find the proportion of food deliveries that took more than 35 minutes to assemble.

a. 0.0243

b. 0.75923

c. 0.15866

d. 0.01743

C. Below how many minutes would you find the fastest 20% of food assembly times? (i.e., find k such that P(food assembly time<k)=0.20

a. 24.5 minutes

b. 25.8 minutes

c. 20.3 minutes

d. 34.6 minutes

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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