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Random samples of 100 men and 100 women were collected from the 2008 General Social Survey, with each person reporting the number of children they had. The average number of children for men was 1.49 with a standard deviation of 1.76. The average number of children for women was 1.85 with a standard deviation of 1.57. At the 0.05 significance level, test the cliam that the average number of children for men is equal to the average number of children for women.
Johnny Comlatey has 53% of votes among all voters in two-way race. Probability that newspaper's poll of 380 voters would forecast Johnny Comlatey's opponent the winner is?
does your experimental drug affect cholesterol? you run a study where the 15 subjects in group 1 receive the
Determine the approximate probability that in random sample of 1000 individuals who have purchased fries at McDonald's.
When students go to the Health Center these days complaining of pain, they are asked to assess their pain using emoticons. One person's assessment is an example of what kind of data?
Is there evidence that teams with higher total payrolls tend to be more successful? Justify your answer.
it is common in many industrial areas to use a filling machine to fill boxes full of product. this occurs in the food
Is there evidence to reject the hypothesis that the apartments are equally distributed between 1-bedroom, 2-bedroom, and 3-bedroom apartments, at alpha = .05?
Let a success (x) be defined as a camera functioning. Find the probability that the robbery was filmed at least by one camera.
The sample showed an average of 56.2 miles per gallon with a standard deviation of 5 miles per gallon. With a 0.05 level of significance, do you accept or reject the manufacturer's claim.
Assume H- to be true. What is the probability that this decision strategy will result in a type I error. Sketch the sampling distribution and put in the region of rejection?
Several questions will be asked but the main outcome measure of interest will be the percentage of customers who were completely satisfied and plan to return and the average amount spent.
1. calculate the residual for the x y pair 44491 4807.2. did the regression equation underestimate or overestimate the
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