Money people carry into the store is normally distributed with a mean of $258 dollars and a standard deviation of $35. In a sample of 76 Americans who walked into a store fine the probability that a random customer will have more than $260 in his or her wallet.

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The annual ground coffee expenditures for households are approximately normally distributed with a mean of $46.34 and a standard deviation of $10.00. a. Find the probability that a household spent less than $30.00. b. Find the probability that a household spent more than $50.00. c. What proportion of the households spent between $20.00 and $30.00?

The golf scores for a school team were normally distributed with a mean of 68 and a standard deviation of three.Find the probability that a golfer scored between 66 and 70

Español The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an average (mean) of 1.85 pounds with a standard deviation of 0.95 pounds. In a recent study, a group of 55 people who used this pill were interviewed. The study revealed that these people lost a mean of 1.9 pounds after one week. If the producer's claim is correct, what is the probability that the mean weight loss after one week on this pill for a random sample of 55 individuals will be 1.9 pounds or more? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places. X S ?

Assume that the average weight of an NFL player is 245.7 lbs with a standard deviation of 34.5 lbs. The distribution of NFL weights is not normal. Suppose you took a random sample of 32 players. What is the probability that the sample average will be less than 260 lbs?

Citizens use an average of 650 pounds of paper a year. Suppose that the distribution is normal with a population standard deviation of 153.5 pounds.  Suppose you take a random sample of 25 Citizens. What is the probability that the mean pounds of paper used in a year are between 500 and 700 pounds

One year, the distribution of salaries for professional sports players had a mean of $1.6 million and a standard deviation of $0.7 million. Suppose a sample of 100 major league players was taken. Find the approximate probability that the average salary of the 100 players that year exceeds $1.1 million.

The average number of pounds of red meat a person consumes each year is 196 with a standard deviation of 22 pounds (Source: American Dietetic Association). If a sample of 50 individuals is randomly selected, find the probability that the mean of the sample will be greater than 200 pounds. OA. 0.0985 OB. 0.9015 OC. 0.8815 O D. 0.7613 C

A study found that student weights averaged 87.3lb with a SD = 4lb.   What is the 2-decimal % probability that an individual student will weight below 85 lb?   What is the 2-decimal % probability that a group of 35 students will have a mean weight of over 88 lb?