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The mean work week for engineers in a start-up company is believed to be about 64 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 • The null hypothesis, in symbols, is µ • Is the test left-tailed, right-tailed, or two-tailed? left-tailed right-tailed two-tailed

The mean work week for engineers in a start-up company is believed to be about 64 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 • The null hypothesis, in symbols, is µ • Is the test left-tailed, right-tailed, or two-tailed? left-tailed right-tailed two-tailed

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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The mean work week for engineers in a start-up company is believed to be about 64 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 • The null hypothesis, in symbols, is µ • Is the test left-tailed, right-tailed, or two-tailed? left-tailed right-tailed two-tailed
Transcribed Image Text:The mean work week for engineers in a start-up company is believed to be about 64 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 • The null hypothesis, in symbols, is µ • Is the test left-tailed, right-tailed, or two-tailed? left-tailed right-tailed two-tailed
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