The average age of lawyers is 43.6 years, with a standard deviation of 5.1 years. If a law firm employs 50 lawyers, find the probability that the average age of the group is greater than 44.2 years old.

Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability of randomly selected adult has an IQ score less than 115.

The lengths of human pregnancies are approximately normally distributed with a mean of 268 days and a standard deviation of 16 days. What is the probability that pregnancy lasts between 240 and 280 days?

Suppose the heights of students in a class follows normal distribution. The mean is 66 inches and the standard deviation is 5 What is the probability that a randomly selected student height is above 69 inches? What is the probability that the height will fall in between 45-54 inches? Which of the following intermediate step is involved in finding probability that a randomly selected student height is more than 70 inches?

Assume that adults have IQ scores that are normally distributed with a mean of 98 and standard deviation of 15. Find the probability that a randomly selected adult has an IQ greater than 104.

Assume that the square footage of a residential house in the US is normally distributed with a mean=1000 and standard deviation=150 square feet. If we select a random house what is the probability that it will be at most 1050 square feet?

The average age of the JYP employees is known to be 32 years and the standard deviation is 5 years. Find the  probability that a random sample of 36 employees will have an average age of less than 30 years. What is the probability of 36 employees who have an average age of less than 30 years?

The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 20 days. If 64 women are randomly selected find the probability that they have a mean pregnancy between 266 days and 268 days

JA researcher takes an SRS of 80 people who go golfing.The average to be u52 years old. It was also determined that the standard deviation of cac ot golfers was la What is the probability that the sample mean is kss. than 47 years old? age of all golferswas determined years.

According to a survey, 10% of Americans are afraid to fly. Suppose n=1052n=1052 Americans are sampled. While computing standard deviation, use either at least 6 places or even better is to use the exact value. What is the probability percentage that 121 or more Americans in the survey are afraid to fly? Round the percent to two decimal places.  What is the probability percentage that between 101 and 165 (inclusive) Americans in the survey are afraid to fly? Round the percent to two decimal places.