1 and 2 heights of professional hockey players follow distribution with mean 186 cm and standard deviation...
Question:
1 and 2 heights of professional hockey players follow distribution with mean 186 cm and standard deviation 7 cm.
1 What is the probability that the average height of a random sample of 7 players is greater than 189cm?
keep 4 decimal places in intermediate calculations and report your final answer to 4 decimal places.
2 What is the probability that the average height of a random sample of 12 players is less than 182cm?
keep 4 decimal places in intermediate calculations and report your final answer to 4 decimal places.
3 the weights of organic fertilizer is normally distributed with a mean of 60 pounds and a standard deviation of 2.5 pounds. if we take a random sample of 9 bags of organic fertilizer, there is a 70 % chance that their mean and weight will be less than what value?
keep 4 decimal places in intermediate calculations and report your final answer to 2 decimal places.
4 weights of suitcases checked in at the airport follow a normal distribution with mean 28 pounds and standard deviation 5 pounds. What is the probability that the total weight of a random sample of six suitcases is greater than 180 pounds?
keep 4 decimal places in intermediate calculations and report your final answer to 4 decimal places.