Question: Recalculate the required sample sizes for part (a) of Exercise 7 if the two populations are matched with = .6. Data from exercise 7

Recalculate the required sample sizes for part (a) of Exercise 7 if the two populations are matched with ρ = .6.

Data from exercise 7

a. Calculate g for the comparison of the means of Turck and Kirk Halls (if you did not already calculate that value for Exercise 1 of Chapter 7). Use g as your estimate of d, and compute the sample sizes you would need for power = .75, for a .05 two-tailed test, comparing the two dormitories.

Step by Step Solution

★★★★★

3.35 Rating (161 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

6 d 159 324 So 324 251n2 and th... 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

Students Have Also Explored These Related Statistics Behavioral Sciences Questions!

A study is being planned to investigate the association between systolic blood pressure (SBP) and independent variables age (AGE), smoking history (SMK = 0 if non-smoker, SMK = 1 if a current or...

To establish a comparison of customer satisfaction levels, the National Association of Auto Dealers has taken a sample of 200 recent buyers of an American made car, and 200 recent buyers of a...

Refer to Exercise 10.83. Suppose you wish to estimate the difference in mean times to absorption correct to within 1 minute with probability approximately equal to .95. a. Approximately how large a...

Hello, Any help on the assignment below will be appreciated. Question 1: SAMPLING (Part A) Suppose you wish to evaluate the prices ( rent asked, per week ) of 1to3bedroom rental properties. Your...

1 1. The time X (minutes) for a lab assistant to prepare the equipment for a certain experiment is believed to have a uniform distribution with A = 20 and B = 30. a. Write the pdf of X and sketch its...

Journal of Autism and Developmental Disorders, Vol. 32, No. 3, June 2002 ( 2002) Descriptive Epidemiology of Autism in a California Population: Who Is at Risk? Lisa A. Croen,1,3 Judith K. Grether,1...

2. Describe what is measured by the estimated standard error in the bottom of the independentmeasures t statistic. 4. One sample has SS= 60 and a second sample has SS=48. a. If n=7 for both samples,...

1 (1 point) You own a small storefront retail business and are interested in determining the average amount of money a typical customer spends per visit to your store. You take a random sample over...

1. Calculate the sample size needed given these factors: one-tailed t-test with two independent groups of equal size small effect size (see Piasta, S.B., & Justice, L.M., 2010) alpha =.05 beta = .2...

There are two vessels A and B which contains mixture of sulphuric acid and nitruous oxide in the ratio of 72 and 3: 4 respectively. Mixture of both vessels are mixed to obtain a mixture of 390 ml, in...

A (1.2x4.2)m rectangular footing is placed at a depth of ( D f =1m) below the G.S. in clay soil with u = 0 , = 18 kN/m3 , Cu = 22 kN/m2 . Find the allowable maximum load which can be applied under...

Work out these additions and subtractions. Use the same method as in part a of the worked example. a + 810 45 + + 3 72 23: b f j 165295 + 123415 e i C 16 + P 61 101910 35 13 45. 9 k T + 3888 25...

7 Outline the kinds of research typical to sales promotion campaigns.

Assuming there are 1000 people 65+ years of age in the community, what is the expected number of cases of Alzheimers disease in the community? Suppose a study of Alzheimers disease is proposed in a...

Suppose 3 children in a village ages 3, 5, and 7 are vaccinated with the QIV vaccine. What is the probability that at least one child among the 3 will get influenza? Infectious Disease Commonly used...

What % of 34-year-old children in the village will get influenza? Suppose that 80% of 34-year-old children and 70% of 58-year-old children in a village are vaccinated with QIV vaccine. Also assume...

A bond with a face value of $1,000 matures in 9 years and has a 7% semiannual coupon. The bond currently is traded at $900. Which of the following statements is CORRECT? Select one: a. The nominal...

When is hypothesis testing carried out about a median? Explain and present an example.

A researcher wants to determine whether adolescents spend more time in a day around friends than adults do. He gathers a sample of n = 10 adolescents (aged 12-17) and a sample of n = 6 adults (aged...