LEARNING ACTIVITIES 3 Direction: Read the questions carefully. Choose the correct answer from the given choices after each question. Write the corresponding letter of your choice with your solution in your answer sheet. 1. The mean weight of a group of boys is 145 lb, with a standard deviation of 4 lb. If the weights are normally distributed, what percent of the boys from the group weigh between 147 and 155 Ib? Round your answer to one decimal place. а. 19.1% b. 49.4% c. 68.5% d. 30.3% e. 31.5% е. 2. The light bulbs produced by a generic manufacturer have a stated average life of 1,146 hours. Assume that the lifetimes of the bulbs are normally distributed with a standard deviation of 100 hours. Find the probability that a light bulb from this manufacturer will last longer than 1,271 hours. Round your answer to four decimal places. a. 0.894 b. 0.789 C. 0.106 d. 0.394 е. 0.606
LEARNING ACTIVITIES 3 Direction: Read the questions carefully. Choose the correct answer from the given choices after each question. Write the corresponding letter of your choice with your solution in your answer sheet. 1. The mean weight of a group of boys is 145 lb, with a standard deviation of 4 lb. If the weights are normally distributed, what percent of the boys from the group weigh between 147 and 155 Ib? Round your answer to one decimal place. а. 19.1% b. 49.4% c. 68.5% d. 30.3% e. 31.5% е. 2. The light bulbs produced by a generic manufacturer have a stated average life of 1,146 hours. Assume that the lifetimes of the bulbs are normally distributed with a standard deviation of 100 hours. Find the probability that a light bulb from this manufacturer will last longer than 1,271 hours. Round your answer to four decimal places. a. 0.894 b. 0.789 C. 0.106 d. 0.394 е. 0.606
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 19PPS
Related questions
Topic Video
Question
Transcribed Image Text:LEARNING ACTIVITIES 3
Direction: Read the questions carefully. Choose the correct answer from the given choices
after each question. Write the corresponding letter of your choice with your solution in your
answer sheet.
1. The mean weight of a group of boys is 145 Ib, with a standard deviation of 4 Ib. If the weights are
normally distributed, what percent of the boys from the group weigh between 147 and 155 Ib? Round
your answer to one decimal place.
a.
19.1%
b.
49.4%
C.
68.5%
d.
30.3%
е.
31.5%
2. The light bulbs produced by a generic manufacturer have a stated average life of 1,146 hours. Assume
that the lifetimes of the bulbs are normally distributed with a standard deviation of 100 hours. Find the
probability that a light bulb from this manufacturer will last longer than 1,271 hours. Round your answer
to four decimal places.
a.
0.894
b. 0.789
C.
0.106
d.
0.394
е.
0.606
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill