Independent simple random samplesof 400 men and 400 women wereasked whether they planned to attend a...

Independent simple random samplesof 400 men and 400 women wereasked whether they planned to attend a concert in the next month. The number that said yes for men and women was 57 and 69, respectively. At the 5% significance level, test the claim that a difference exists in the distribution of concert attendance status among men and women

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orchestra answered 2 years ago

A random sample of 400 men and 400 women was randomly selected and asked whether they...

A random sample of 400 men and 400 women was randomly selected and asked whether they planned to attend a concert in the next month. The results are listed below. Perform a homogeneity of proportions test to test the claim that the proportion of men who plan to attend a concert in the next month is the same as the proportion of women who plan to attend a concert in the next month. Use α = 0.04. men women plan...

Independent simple random samples of 400 Hong Kong women and 380 Macao women were taken. Of...

Independent simple random samples of 400 Hong Kong women and 380 Macao women were taken. Of Hong Kong women, 318 were found to be in the labor force; of the Macao women, 276 were found to be in the labor force. At the 5% significance level, do the data suggest that the labor-force participation rate of Hong Kong women is higher? Use the P-value approach to perform a hypothesis test.

Pulse rates for Men A simple random sample of 40 pulse rates of women were taken....

Pulse rates for Men A simple random sample of 40 pulse rates of women were taken. The mean of women’s pulse rates have a mean of 67.3 beats per minute and a standard deviation of 10.3 beats per minute. Construct a 99% confidence interval estimate of the standard deviation of the pulse rates of men. Pulse rates are normally distributed.

A group consists of 6 men and 5 women. Four people are selected to attend a...

A group consists of 6 men and 5 women. Four people are selected to attend a conference. a. In how many ways can 4 men be selected from this group of 11? b. In how many ways can 4 men be selected from the 6 men? c. Find the probability that the selected group will consist of all men. Would this be unusual?

12.14. A random sample of 100 men and 100 women were asked whether they would be willing...

12.14. A random sample of 100 men and 100 women were asked whether they would be willing to work as unpaid volunteers. The results indicate that 54% of the men and 64% of the women responded YES to this question, while 46% of the men and 36% of the women responded NO to the question. The chi square test was used to determine whether the men and women in the study differ in their willingness to work as unpaid volunteers. The...

To test Ho: ? = 400 versus H1: ? > 400, a simple random sample of...

To test Ho: ? = 400 versus H1: ? > 400, a simple random sample of n = 100 is obtained. Assume the population standard deviation is 80. If the researcher decides to test this hypothesis at the ?? = .05 level of significance, compute the probability of making a Type II Error if the true population mean is 420. What is the power of the test?

Is there a statistically significant difference in weight between men and women? (Conduct an independent t...

Is there a statistically significant difference in weight between men and women? (Conduct an independent t test.) Identify the independent and dependent variables. Write a null hypothesis. Write an alternative non-directional (2-tail) hypothesis. Interpret your results. Guidelines for interpreting independent t tests can be found in What to Include When Writing Up Independent t Test Results (PDF).

A. As a health policy expert, you are interested in knowing whether men and women in...

A. As a health policy expert, you are interested in knowing whether men and women in the United States differ in the frequency they visit doctors when sick. So you conduct a survey of 134 people and ask them how often they visit a doctor when they are sick. The results from this sample are as follows: Frequency visit doctor Sex Always Sometimes Never Total Men 13 41 27 81 Women 24 19 10 53 Total 37 60 37 134 Perform...

Given in the table are the BMI statistics for random samples of men and women. Assume...

Given in the table are the BMI statistics for random samples of men and women. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. Male BMI Female BMI m m1 m2 n 47 47 x 27.0582 26.2309 s 7.742635 4.732567 a. Test the claim that males and females have...

A random sample of 400 families who planned to buy a vacation residence revealed that 250...

A random sample of 400 families who planned to buy a vacation residence revealed that 250 families want to buy a condominium in Florida. The previous study shows that 55% of those families who plan to purchase a vacation residence in Florida want a condominium. Required: Can we conclude that there are more than 55% families who will buy the condominium in Florida, state your decision in terms of the null hypothesis. Use a 0.01 level of significance. Calculate...

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