Mathematics, 25.03.2020 05:23 yalley1982
The manager of a vacation resort believes that the ages of adult visitors to the resort can be modeled by a normal distribution. The manager surveyed a random sample of 765 visitors and recorded their age. A summary of the responses is shown in the frequency table, where x represents the age of the visitor.
(a) Construct a histogram of the distribution of ages.
(b) Write a few sentences to describe the distribution of ages of the adult visitors to the resort.
(c) Does the histogram provide convincing evidence that the surveyed ages come from a normal distribution? Explain your answer.
Age (years) Frequency
20≤x<30 160
30≤x<40 130
40≤x<50 100
50≤x<60 115
60≤x<70 125
70≤x<80 135
Answers: 2
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