Question: 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

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 she wishes the estimate to be within 3 percentage points with 95% conﬁdence, assuming that
(a) she uses the 1998 estimates of 21.9% male and 19.7% female from the U.S. National Center for Chronic Disease Prevention and Health Promotion?
(b) she does not use any prior estimates?

Step by Step Solution

★★★★★

3.25 Rating (169 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a n n 1 n 2 p 1 1 p 1 p 2 1 p 2 z 2 E 021... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

445-M-S-S-I (615).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Air entrainment in a draining tank (Figure 3A.7) a molasses storage tank 60 ft in diameter is to be built with a draw-off line 1 ft in diameter, 4 ft from the sidewall of the tank and extending...

Suppose a market analyst wants to determine the difference in the average price of a gallon of whole milk in Seattle and Atlanta. To do so, he takes a telephone survey of 21 randomly selected...

A Kansas farmer wants to determine the average rainfall on his sunflower crop. The sunflower field takes up an entire section (a square of 1 mile per side, or 640 acres). The farmer has rain gauges...

Nw 3 3 . Determining Sample Size 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...

Question# 5 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...

1.A random sample of 40 adults with no children under the age of 18 years results in a mean daily leisure time of 5.28 hours, with a standard deviation of 2.28 hours. A random sample of 40 adults...

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...

1.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 she wishes...

1. 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 she wishes...

Explain how the Canadian and Chinese gains from trade will change. Who in Canada will lose and who will gain?

Assume a portfolio with 8 risky stocks. Hereafter you find their expected rate of return, volatility Volatility 14% 28% Stock A B C D E F G H and correlation matrix A B C D E F G H Expected return...

A company reports the following: Line Item Description Amount Net income $320,000 Preferred dividends 12,800 Average stockholders' equity 2,857,143 Average common stockholders' equity 1,528,358...

In your own words, explain how Austin's version of legal positivism could be used to deem the Third Reich laws valid.

Paul is the managing director of Dynamight Pty Ltd (Dynamight) which is involved in the manufacture of electric dynamos. Paul, on behalf of Dynamight, has accepted an order for 300 electric dynamos...

Nine-month-old Byron has a toy with large, colored push buttons on it. Each time he pushes a button, he hears a nursery tune. Which learning capacity is the toy's manufacturer taking advantage of?...

Prepare a multiple-step income statement in good form. (Include EPS) Calculate retained earnings as of December 31, 2018. Prepare a classified balance sheet in good form. Calculate working capital....

A steel bar has a rectangular cross section as shown. It is fixed to the wall at point A, and when the bar is not loaded, there is a 0.05 mm gap between the bar and wall at point C. A 20 kN and a 10...

23. Suppose that $1 billion of passthroughs are used to create a CMO structure, KMF-05. This structure includes a PAC tranche with a par value of $650 million and a support tranche with a par value...

In Problems 1316, find each sum. 10 (-2)* k=1

In Problems 1719, find the indicated term in each sequence. 1 1 11th term of 1,- '10' 100'

In Problems 516, evaluate each expression. 37 19,

Question Let ,ul and p2 denote true average densities for two different types of brick. Assuming normality of the two density distributions, test: H0: p1 ,uz = 0 versus Ha: _u.1 #2 0 Use the...

Cairo Cab, Inc.. uses two dispatchers to handle reauests for service and to dispatch the cabs. The telephone calls that are made to Cairo Cab use a common telephone number. When both dispatchers are...

Geary Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for $931,200 is estimated to result in $310,400 in annual pretax cost savings....