EXERCISE 14
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only 2 had seen or sensed the presence of an angel. As a result of the contingentÂ’s survey, would you agree with the Newsweek poll? In complete sentences, also give three reasons why the two polls might give different results.
EXERCISE 15
The average work week for engineers in a start-up company is believed to be about 60 hours. A newly hired engineer hopes that itÂ’s shorter. She asks 10 engineering friends in start-ups for the lengths of their average work weeks. Based on the results that follow, should she count on the average work week to be shorter than 60 hours?
Data (length of average work week): 70; 45; 55; 60; 65; 55; 55; 60; 50; 55.
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only 2 had seen or sensed the presence of an angel. As a result of the contingentÂ’s survey, would you agree with the Newsweek poll? In complete sentences, also give three reasons why the two polls might give different results.
EXERCISE 15
The average work week for engineers in a start-up company is believed to be about 60 hours. A newly hired engineer hopes that itÂ’s shorter. She asks 10 engineering friends in start-ups for the lengths of their average work weeks. Based on the results that follow, should she count on the average work week to be shorter than 60 hours?
Data (length of average work week): 70; 45; 55; 60; 65; 55; 55; 60; 50; 55.
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