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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 years. 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

3

315

1415

1494

449

13

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

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