The mean work week for engineers in a start-up company is believed to be about 65 hours. A newly hired engineer hopes that it's shorter. She asks 10 engineering friends in start-ups for the lengths of their mean work weeks. Their responses are 70; 45; 55; 60; 65; 55; 55; 60; 50; 55. • Is the newly hired engineer testing a mean or a proportion? mean proportion o O O • The null hypothesis, in symbols, is μ = • Is the test left-tailed, right-tailed, or two-tailed? left-tailed right-tailed two-tailed o O O
The mean work week for engineers in a start-up company is believed to be about 65 hours. A newly hired engineer hopes that it's shorter. She asks 10 engineering friends in start-ups for the lengths of their mean work weeks. Their responses are 70; 45; 55; 60; 65; 55; 55; 60; 50; 55. • Is the newly hired engineer testing a mean or a proportion? mean proportion o O O • The null hypothesis, in symbols, is μ = • Is the test left-tailed, right-tailed, or two-tailed? left-tailed right-tailed two-tailed o O O
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 42PFA
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Question
![MyOpenMath
The mean work week for engineers in a start-up company is believed to be about 65 hours. A newly
hired engineer hopes that it's shorter. She asks 10 engineering friends in start-ups for the lengths of
their mean work weeks. Their responses are 70; 45; 55; 60; 65; 55; 55; 60; 50; 55.
• Is the newly hired engineer testing a mean or a proportion?
mean proportion o
O
O
11/13/2
• The null hypothesis, in symbols, is μ =
• Is the test left-tailed, right-tailed, or two-tailed?
left-tailed right-tailed two-tailed o
O](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe76b69af-9a2c-4c6c-92e8-18acb680d06b%2Fdbc8f2a9-b32e-4f62-b540-c1e6a469eb3d%2F665pu2y_processed.jpeg&w=3840&q=75)
Transcribed Image Text:MyOpenMath
The mean work week for engineers in a start-up company is believed to be about 65 hours. A newly
hired engineer hopes that it's shorter. She asks 10 engineering friends in start-ups for the lengths of
their mean work weeks. Their responses are 70; 45; 55; 60; 65; 55; 55; 60; 50; 55.
• Is the newly hired engineer testing a mean or a proportion?
mean proportion o
O
O
11/13/2
• The null hypothesis, in symbols, is μ =
• Is the test left-tailed, right-tailed, or two-tailed?
left-tailed right-tailed two-tailed o
O
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