
Prices for flights from a certain airport have mean $96.04. Assume the prices have standard deviation...
Prices from flights from a certain airport have mean $92.94. Assume the prices have standard deviation $14.23. A sample of 46 flights was selected. Find the 54th percentile for the sample mean. Round to two decimal places for your answer.
Question 9 (1 point) Saved Electricity bills in a certain city have mean $ 123.76. Assume the bills are normally distributed with standard deviation $ 18.20. A sample of 60 bills was selected for an audit. Find the 44 percentile for the sample mean. Write only a number as your answer. Round to two decimal places (for example: 42.81). Do not write any units. Your Answer: Answer
Question 8 (1 point) A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 15. A sample of 36 students was selected. What is the probability that the average time spent studying for the sample was between 28.7 and 30 hours studying? Write only a number as your answer. Round to 4 decimal places (for example 0.0048). Do not write...
Electricity bills in a certain city have mean $101.91. Assume the bills are normally distributed with standard deviation $19.65. A sample of 57 bills was selected for an audit. Find the 59 percentile for the sample mean. round to two decimal places
electricity bills in a certain city have mean 120.13. assume the bills are normally distributed with standard deviation 13.60. a sample of 54 bills was selected for an audit. find the 62 percentile for the sample mean. round to two decimal places.
9) Electricity bills in a certain city have mean $104.88. Assume the bills are normally distributed with standard deviation $12.40. A sample of 69 bills was selected for an audit. Find the 38 percentile for the sample mean. Round to two decimal places. 10) According to one survey, the mean serum cholesterol level for US adults was 197.4 with a standard deviation 51.9. A simple random sample of 96 adults is chosen. Find the 46 percentile for the sample mean....
According to one survey, the mean serum cholesterol level for U.S. adults was 199.3 , with a standard deviation of 49.4. A simple random sample of 107 adults is chosen. Find the 35 percentile for the sample mean. Write only a number as your answer. Round to one decimal places (for example: 204.1). Do not write any units. Your Answer: Answer
ulstioil8(1.2 points) At a major International Airport, 0.48 of the flights arrive on time. A sample of 11 flights is studied. What is the probability that more than 3 of them arrived on time? Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do not write as a percentage. Your Answer: Answer Question 7 (1.2 points) In an elementary school, 27 % of children wear glasses. Suppose that a random sample of 54 children...
At a major International Airport, 0.30 of the flights arrive on time. A sample of 13 flights is studied. What is the probability that more than 3 of them arrived on time? Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do not write as a percentage.
At a certain airport, 80% of the flights arrive on time. A sample of 14 flights is studied. 1) Find the probability that 9 flights were on time 2) Find the probability that exactly 10 of the flights were on time 3) Find the probability that 11 or more of the flights were on time Show your explanations. Displaying only the final answer is not enough to get credit. Note: round calculated numerical values to the fourth decimal place where...