how do i answer these?

A political pollster is conducting an analysis of sample results in order to make predictions on election night. Assuming a two-candidate election, if a specic candidate receives at least 55% of the vote in the sample, that candidate will be forecast as the winner of the election. You select a random sample of 100 voters. Complete parts (a) through (c) below. a. What is the probability that a candidate will be forecast as the winner when the population percentage of her vote is 50.1%? The probability is D that a candidate will be forecast as the winner when the population percentage of her vote is 50.1%. (Round to four decimal places as needed.) Asurvey of 2,350 adults reported that 57% watch news videos. Complete parts (a) through (c) below. a. Suppose that you take a sample of 100 adults. If the population proportion of adults who watch news videos is 0.57, what is the probability that fewer than half in your sample will watch news videos? The probability is D that fewer than half of the adults in the sample will watch news videos. (Round to four decimal places as needed.) The following data represent the responses (Y for yes and N for no) from a sample of 20 college students to the question "Do you currently own shares in any stocks?" YYNYNYYYNYNYYYYYNNYYD a. Determine the sample proportion, p, of college students who own shares of stock. b. If the population proportion is 0.40, determine the standard error of the proportion. a. p = D (Round to two decimal places as needed.) In a random sample of 60 people, 15 are classied as "successful." a. Determine the sample proportion, p, of "successful" people. b. If the population proportion is 0.75, determine the standard error of the proportion. a. p = D (Round to two decimal places as needed.) The diameter of a brand of tennis balls is approximately normally distributed, with a mean of 2.73 inches and a standard deviation of 0.06 inch. A random sample of 10 tennis balls is selected. Complete parts (a) through (d) below. a. What is the sampling distribution of the mean? 3A. Because the population diameter of tennis balls is approximately normally distributed, the sampling distribution of samples of size 10 will also be approximately normal. B. Because the population diameter of tennis balls is approximately normally distributed, the sampling distribution of samples of size 10 cannot be found. C. Because the population diameter of tennis balls is approximately normally distributed, the sampling distribution of samples of size 10 will be the uniform distribution. D. Because the population diameter of tennis balls is approximately normally distributed, the sampling distribution of samples of size 10 will not be approximately normal. b. What is the probability that the sample mean is less than 2.72 inches? P()_(