Help me work the following problems steps by steps explanation

QUESTION 1

1. The annual per capita consumption of fresh oranges in the United States can be approximated by a normal distribution, with a mean of 4.5 kg and a standard deviation of 1.14 kg.What is the smallest annual per capita consumption of oranges that can be in the top quartile of consumptions?
2. A.6 kg
3. B.3.73 kg
4. C.5.27 kg
5. D.3.04 kg

QUESTION 2

1. At La Guardia Airport, the mean number of days in July with 0.01 inch or more precipitation is 10.What is the probability that it has 5days with 0.01 inch or more precipitation next July?
2. A.0.2461
3. B.0.5000
4. C.0.0010
5. D.0.0378

QUESTION 3

1. A survey was conducted to measure the heights of U.S. men. The heights were normally distributed, with a mean of 175.4cm and a standard deviation of 6.76cm.What is the probability that a randomly selected US male will have a height more than182.2 cm?
2. A.15.6%
3. B.84.1%
4. C.15.9%
5. D.84.4%

QUESTION 4

1. The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by a normal distribution with mean = 16.6 and standard deviation= 3.7.What is the largest annual per capita consumption of ice cream that can be in the bottom 10.03% of consumptions? Please answer in two decimalpoints.

QUESTION 5

1. The prices of a random sample of 25new motorcycles have a sample standard deviation of 392.92. Use a 90% level of confidence to calculate the right end point of the confidence interval for the standard deviation.
2. Answer your question in two decimal points.

QUESTION 6

1. A survey of U.S. adults, ages 30 - 49 years,45.95 % watches HBO. You randomly select 100 adults ages 30-49 years and ask them if they watch HBO.Find the probability thatmore than 55people say they watch HBO.
3. A.0.9726
4. B.0.9656
5. C.0.0153
6. D.0.9573