15 25 35 45 55 P(x) 0.05 0.35 0.25 0.05

Find the indicated probability and interpret the result. From 1975 through 2020, the mean annual gain of the Dow Jones Industrial Average was 653. A random sample of 34 years is selected from this population. What is the probability that the mean gain for the sample was between 400 and 800? Assume o = 1540. The probability is (Round to four decimal places as needed.) Interpret the result. Select the correct choice and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. About OB. About OC. About OD. About % of samples of 46 years will have an annual mean gain between 400 and 800. % of samples of 34 years will have an annual mean gain between 653 and 800. % of samples of 34 years will have an annual mean gain between 400 and 800. % of sampl of 34 years will have an annual mean gain between 400 and 653.

At a particular college 19 percent of the students major in business. All business majors are required to take a statistics course. Of the students not majoring in business, 31 percent of them still have to take a statistics course. What is the probability that a student has to take a statistics course at this particular college? Type your answer as a decimal to 4 decimal places.

what about : Determine the probability that exactly 34 flights will arrive on time.

The weight of a package mailed during the holidays follows a uniform distribution and ranges from 2 pounds to 9 pounds. What is the probability that a package is less than 5 pounds?  Express answer as a percent with 1 decimal

A high school baseball player has a 0.272 batting average. In one game, he gets 5 at bats. What is the probability he will get at least 2 hits in the game? Give answer as a decimal rounded to 3 places