The average number of kilos of meat a person consumes in a year is 110 kilos. Assume that the standard deviation is 12 kilos and the distribution is approximately normal. If a sample of 45 individuals is selected, find the probability that the mean of the sample will be 105 kilos or greater per year. Express your answer in percent form with 2 decimal places (with percent symbol - e.g. 10.00%)

One year consumers spent an average of ​$22 on a meal at a resturant. Assume that the amount spent on a resturant meal is normally distributed and that the standard deviation is ​$3. Complete parts​ (a) through​ (c) below. Between what two values will the middle 95​% of the amounts of cash spent​ fall?

Type in your answer below: As in the previous question, female's pulse rates are normally distributed with a mean 74 beats per minute and a standard deviation 12.5 beats per minute. Find the probability that a female has a pulse rate between 60 beats per minute and 70 beats per minute. You can use a calculator or table A-2 in your textbook. Round your answer to three decimal places.

construct a 90% condifence interval for the population mean of total calcium in this patient blood

Find the standard deviation (rounded to the nearest unit) for the data indicated.   Test Score              Frequency 90   1         80   4         70   7         60   6         50   3

What provides a measure of the variance caused by random, unsystematic differences? a. ​the error term ​b. the F ratio ​c. MS ​d. SStotal

Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P7, the 7th percentile. This is the bone density score separating the bottom 7% from the top 93%. Which graph represents P7? Choose the correct graph below. A. P7 The bone density score corresponding to P7 is (Round to two decimal places as needed.) B. A P7 2 C. ^ P7 Ly D. A P7

The average number of kilos of meat a person consumes in a year is 90 kilos. Assume that the standard deviation is 10 kilos and the distribution is approximately normal. If a sample of 45 individuals is selected, find the probability that the mean of the sample will be 87 kilos or greater per year. Express your answer in percent form with 2 decimal places (with percent symbol - e.g. 10.00%) type your answer...

Today, the waves are crashing onto the beach every 4.3 seconds. The times from when a person arrives at the shoreline until a crashing wave is observed follows a Uniform distribution from 0 to 4.3 seconds. Round to 4 decimal places where possible. 1. 66% of the time a person will wait at least how long before the wave crashes in?

Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the difference between proportions of men and women who own smartphones. Assume that you want 95​% confidence that your error is no more than 0.03.