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The following data represent the high-temperature distribution for a summer month in a city for some...

The following data represent the high-temperature distribution for a summer month in a city for some of the last 130 days. Treat the data as a population. Complete parts (a) through (c).

Temperature : 50-59 60-69 70-79 80-89 90-99 100-109

Days: 1 317 1416 1524 420 11

(a) Approximate the mean and standard deviation for temperature.

Mean = _____

Standard Deviation = ________

(b) Use the frequency histogram of the data to verify that the distribution is bell shaped.

____ No, the frequency histogram of the data is not bell shaped.

____Yes, the frequency histogram of the data is bell shaped.

(c) According to the empirical rule, 95% of days in the month will be between what two _____ and _____.

(Round to one decimal place as needed. Use ascending order)

Math   Statistics-And-Probability   
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