Researchers for a manufacturer of barometers (devices to measure atmospheric pressure) read each of 50 barometers at the same time of day. The mean of the readings is 30.3

(inches of mercury) with a standard deviation of 0.22inch, and the readings appear to be normally distributed. LOADING... Click the icon to view the table with standard scores and percentiles for a normal distribution.

a. What percentage of the barometers read over 30.85

?nothing% (Round to two decimal places as needed.)b. What percentage of the barometers read less than 29.86?nothing% (Round to two decimal places as needed.)c. The company decides to reject barometers that read more than 1.5standard deviations above or below the mean. What is the critical reading below which barometers will be rejected?nothing (Round to two decimal places as needed.)What is the critical reading above which barometers will be rejected?nothing (Round to two decimal places as needed.)d. What would you take as the actual atmospheric pressure at the time the barometers were read?

A.

The best estimate would be the mean of the readings, or 30.3in.

B.

The best estimate would be all values within 1 standard deviation above or below mean.

C.

The best estimate would be 29.97in.

D.

The best estimate would be 30.85in.