The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the standard deviation of the waiting time is 1 minutes. Find the probability that a person will wait for more than 7 minutes. Round your answer to four decimal places.

The distances golf balls travel under laboratory testing conditions are normally distributed. The mean is 313 yards. The probability the golf ball travels further than 322 yards is 0.13. Find the probability a randomly selected golf ball travels between 304 yards and 322 yards. Express the answer as a decimal value rounded to the nearest hundredth.

The life of lightbulbs is distributed normally. The standard deviation of the lifetime is 20 hours and the mean lifetime of a bulb is 600 hours. Find the probability of a bulb lasting for at most 640 hours. Round your answer to four decimal places

Assume that adults have IQ scores that are normally distributed with a mean of u= 105 and a standard deviation o = 20. Find the probability that a randomly selected adult has an IQ between 91 and 119. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 91 and 119 is (Type an integer or decimal rounded to four decimal places as needed.)

The following information was obtained from two independent samples selected from  two normally distributed populations with unknown but equal standard deviations. Sample 1: 47.7 46.9 51.9 34.1 65.8 61.5 50.2 40.8 53.1 46.1 47.9 45.7 49.0  Sample 2: 50.0 47.4 32.7 48.8 54.0 46.3 42.5 40.8 39.0 68.2 48.5 41.8 a. Let µ1 be the mean of population 1 and µ2 be the mean of population 2. What is the point  estimate of µ1- µ2?  b. Construct a 98% confidence interval for µ1- µ2. c. Test at the 1% significance level if µ1 is greater than µ2.

The weights of steers in a herd are distributed normally. The standard deviation is 200lbs and the mean steer weight is 1300lbs. Find the probability that the weight of a randomly selected steer is between 1000 and 1437⁢lbs. Round your answer to four decimal places.

The time spent waiting in the line is approximately normally distributed. The mean waiting time is 55 minutes and the standard deviation of the waiting time is 22 minutes. Find the probability that a person will wait for less than 99 minutes. Round your answer to four decimal places.

Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ between 84 and 116. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 84 and 116 is (Type an integer or decimal rounded to four decimal places as needed.)

The weights of steers in a herd are distributed normally. The standard deviation is 200lbs and the mean steer weight is 1400lbs. Find the probability that the weight of a randomly selected steer is between 1539 and 1679lbs. Round your answer to four decimal places.

Trucks in a delivery fleet travel a mean of 100 miles per day with a standard deviation of 38 miles per day. The mileage per day is distributed normally. Find the probability that a truck drives at least 141 miles in a day. Round your answer to four decimal places.