A large population of male college students had a nightly sleep time on Monday through Thursday that is normally distributed with a mean of 6.1 hours and a standard deviation of 19 hours. Please show the following answers to 4 decimal places. al it one of these students is selected at random, what is the probability that he has a mean sleep time less than 7 hours? bịif a sample of 30 of these students is chosen, what is the probability that their mean sleep time is less than 7 hours?

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 greater than 234 lbs? Round your answer to three decimal places, How can I do this on excel? How do I include the greater than

The average time to run the 5K fun run is 25 minutes and the standard deviation is 2.3 minutes. 9 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. The top 15% of all 9 person team relay races will compete in the championship round. These are the 15% lowest times. What is the longest total time that a relay team can have and still make it to the championship round? minutes

In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally distributed with a mean of 56.1 inches, and standard deviation of 1.8 inches.What is the probability that the height of a randomly chosen child is between 59.1 and 60.3 inches? Do not round until you get your your final answer, and then round to 3 decimal places.Answer= (Round your answer to 3 decimal places.)

The salary for workers at a company are normally distributed with a mean of $60,000 and a standard deviation of $9,000. A random sample of 36 employees was taken. If a smaller sample of 25 was taken can we still claim that the distribution of x is Normal? No Yes

The average time to run the 5K fun run is 23 minutes and the standard deviation is 2.4 minutes. 44 runners are randomly selected to run the 5K fun run. Round all answers to 4 decimal places where possible and assume a normal distribution. The top 15% of all 44 person team relay races will compete in the championship round. These are the 15% lowest times. What is the longest total time that a relay team can have and still make it to the championship round?

It is known that people in the USA spend on average 15 hours a day using electronic devices with a standard deviation of 4.75 hours. This data follows a normal distribution. What is the probability someone spends less than 20 hours using electronic devices a day? (round your answer to 4 decimals)

The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 5.5 ounces. 15 randomly selected people are surveyed. Round all answers to 4 decimal places where possible. What is the probability that one randomly selected person drinks between 15.5 and 16.5 ounces of coffee per day? Incorrect For the 15 people, find the probability that the average coffee consumption is between 15.5 and 16.5 ounces of coffee per day. For part d), is the assumption that the distribution is normal necessary? YesNo Find the IQR for the average of 15 coffee drinkers.Q1 = ounces Q3 = ounces IQR: ounces