7.5 Team Challenge (B)

7.5 Team Challenge (B)

12th Grade

4 Qs

quiz-placeholder

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7.5 Team Challenge (B)

7.5 Team Challenge (B)

Assessment

Quiz

Mathematics

12th Grade

Medium

Created by

Kevin Koch

Used 2+ times

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4 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A book publisher claims that its mean book length is 250 pages with a standard deviation of 70 pages. What is the probability that for a sample of 45 randomly selected books, the mean length of the book is less than 230 pages?

0.9719

-1.91

0.2081

0.0281

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A pencil manufacturer claims that its pencils have lengths that are normally distributed with a

mean of 6.0 inches and a standard deviation of 0.45 inches. What is the probability that a randomly chosen pencil will have a length more than 6.4 inches?

0.1867

0.8900

0.8133

0.1833

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A local bottling company uses a filling machine to fill plastic bottles with Mr. Koch's favorite Diet Dr. Pepper. The bottles are supposed to contain 300 milliliters. In fact, the contents vary according to a normal distribution with a mean of 303 ml and a standard deviation of 3 ml. What is the probability that a random 12-pack of these bottles has a mean between 302 ml and 304 ml?

0.8749

0.7498

0.1251

1.15

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The weights of the egg produced by a certain breed of hen are normally distributed with a mean of 65 grams and a standard deviation of 5 grams. If a random carton of a dozen eggs are selected at a nearby HyVee store, what is the probability the mean of this sample will be greater than 67 grams?

0.8023

0.9177

0.1977

0.0823

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