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: Days:
​50-59 5
​60-69 309
​70-79 1496
​80-89 1521
​90-99 533
​100-109 6
​(a) Approximate the mean and standard deviation for temperature.

B) Use the frequency histogram of the data to verify that distribution is bell shaped. Yes or No

C) According to the Empirical rule, 95% of the days in the month will be between what two temperatures?