I'm assuming for this problem I need to find the z-score first then find the value on the distribution chart?The mean number of calories consumer per day for females aged 27 is 2725 with a standard deviation of 277. If a simple random sample of 100 females is selected, what is the probability that the mean number of calories ingested is more than 2800?

There is a normal distribution with mean 10 and standard deviation of 8.  What is the z-score of an observation equaling 15?

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I have a dataset with 20 numbers in it. It has a variance of 16, a mean of 10, and a median of 12. What is the measure of skewness?

Suppose commute times in a large city are normally distributed and that 65.20% of commuters in this city take more than 22 minutes to commute one-way. If the standard deviation of such commutes is 6.5 minutes, what is the mean commute?

According to the normal distribution, __________% of the data would fit within 1 standard deviations of the mean.   Multiple Choice   99.7   95   68   99

According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 68 inches and a standard deviation of 2.5 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 4 decimal places where possible. PLEASE ROUND TO 4 DECIMAL PLACES THANK YOU! a. What is the distribution of X? X ~ N(,)b. Find the probability that the person is between 63.2 and 66.2 inches. c. The middle 40% of Martian heights lie between what two numbers?Low:      inchesHigh:     inches

this population, and the mean of each sample is determined. The mean, ux,is The standard error of the mean, Oy, is (Round your answer to 2 decimal places). QUESTION 4 The average number of miles driven each day by a group of drivers is 20.7 miles with a standard deviation of 6.5 miles. If you randomly select 50 drivers, what is the probability that the average number of miles driven each day is between 19.4 and 22.5 miles? Round your answer to 4 decimal places. Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers 5,337 MAY 24 MacBook Air B口 F3 888 F2 F4 1880 %23 24 4 3 T

The life of button batteries is normally distributed with a mean of 68.1 hours and a standard deviation of 18 hours 936 of the button batteries will last more than how many hours? (2 decimal places)