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Using the following information select the appropriate interpretation for the correlation coefficient: Variables being compared are age in years and annual salary. r = -0.15

Using the information below calculate the predicted value for Y for the given value of X. Y (Dependent Variable) = Cost of an annual pass to Disney in dollars X (Independent Variable) = number of black out dates for the Disney annual pass   yhat = 1350 – 10.25*X   On average what would be the cost of an annual pass to Disney if the average number of black out dates was 60 (round your answer to 4 decimal places)?

It is known that the population standard deviation of weight among females is 27. Assuming that we have a random sample of 150, what is the standard error of the average weight among women of a sample of this size?

To compare the treatment effects of two interventions, two independent samples of patient medical data were collected. The sample sizes are 23 and 21 respectively. Assuming that the two populations shared the same variance, the researchers decided to conduct a two independent samples test for the means. What would be the number of degrees of freedom for the obtained t statistic with these sample sizes?

Conduct a hypothesis test based on the following information using a significance level of 5%: Research Question: Is the proportion of males enjoy video sames less than the proportion of females how enjoy video games?   Group 1 = Males Group 2 = Females Test statistic = -2.13 Group 1 Sample size = 76 Group 2 Sample size = 64

Select the appropriate interpretation for the slope of the linear regression equation below. Y (Dependent Variable) = Cost of an annual pass to Disney in dollars X (Independent Variable) = Average number of people who visit each day in thousands of people   yhat = 2122.86 – 30*X

Using the information below calculate the predicted value for Y for the given value of X. Y (Dependent Variable) = Cost of an annual pass to Disney in dollars X (Independent Variable) = Average number of people who visit each day in thousands of people (i.e. X = 1 means one-thousand people)   yhat = 2122.86 – 30*X   On average what would be the cost of an annual pass to Disney if the average number of people who attend each day was 52 thousand (round your answer to 4 decimal places)?

Conduct a hypothesis test based on the following information using a significance level of 5%: Research Question: Are people running more than 23.95 miles per week? Population standard deviation was KNOWN Test statistic = 1.45 Sample size = 31  

To investigate the prevalence rate of diabetes among men in Florida, we drew a random sample of 65 men from that population and among them 15 people had diabetes. For the following hypotheses, what would be your conclusion based on the information provided? The level of significance (alpha level) is 0.05. Ho:  P 0.2 (Alternative)

Calculate the upper bound of a 95% interval for the difference in sample means for the given data (round your answer to 4 decimal places):   DO NOT ASSUME THE POPULATION STANDARD DEVIATIONS OF THE TWO SAMPLES ARE EQUAL Group 1: Carpenter Sample mean = 60000 Sample standard deviation = 5500 Sample size = 10   Group 2: Crane Operator Sample mean = 62500 Sample standard deviation = 2500 Sample size = 14