A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if he wishes the estimate to be within five percentage points with 99% confidence, assuming that a) he uses the estimates of 22.8% male and 18.7% female from a previous year? b) he does not use any prior estimates? a)n=O Round up to the nearest whole number.)

In a recent survey of 157 WMU graduates, 117 students said that parking was too limited on campus. What is the estimate of the population proportion? What is the standard error of this estimate?   Question 7 options:   1)  Estimate of proportion: 0.745, Standard error: 0.0348.   2)  Estimate of proportion: 0.255, Standard error: 0.0028.   3)  Estimate of proportion: 0.745, Standard error: 0.0028.   4)  The true population proportion is needed to calculate this.   5)  Estimate of proportion: 0.255, Standard error: 0.0348.

11)

Given a set of normally distributed scores with the mean of 20.00 and SD of 5.00, what proportion of scores are  a) between 10 and 28 b) between 15 and 32

Suppose on a sample of Montanans it is found the mean salary is equal to 30,000. When we use a statistic like this to simply describe a sample, this is an example of:   a) an inferential statistic b) a descriptive statistic c) a sample median d) random sampling e) b and c

Suppose that in a truckload of potatoes, 6% of the potatoes are bruised or damaged in some way. What is the mean of the sampling distribution of the sample proportion bruised or damaged potatoes for samples of size 200? a) 0.0168 b) 0.06 c) 20

how many women must be randomly selected to estimate the mean weight of women in one age group. we want 90% confidence that the sample mean is within 3.4 lb of the population mean, andthe population standard deviation is known to be 25 lb. A) 147 B) 148 C) 208 D) 146

a) The IQR is a measure of spread of the 50% of a set of data. b) In a set of data that contains 250 data, to calculate the 40th percentile which 2 data must you average? c) What are the 3 measures of central tendency? and 31 UNG