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A survey of 3,000 teenagers in 2005 found that 0.80 believed in God, and 0.18 did not attend religious services. Is this evidence that some sampled teenagers attended religious services in spite of not believing in God, or that some sampled teenagers did not attend religious services in spite of believing in God, or neither? Tell which of these four statistics students provides the best answer. Adam: There's not enough information to answer the question. Brittany: The problem is that we know what's true for the sample but we can't say what's true for the population. Carlos: We're only asked to say what's true for the sample. 18% didn't attend services, so that means 82% did. And only 80% believed in God, so 2% attended services even though they didn't believe in God. Dominique: I agree that the evidence shows some sampled teenagers attended services in spite of not believing in God, but it may be even more than 2%, if there were also some teenagers who didn't attend services, even though they did believe in God.
Calculate and interpret the appropriate statistical test to determine the relationship between the following two variables. Use the five-step model of hypothesis testing to draw conclusions at the .05 level of significance
The number of calories per hot dog was determined for 10 brands of poultry hot dogs. Compute the sample mean, the sample variance, and the sample standard deviation
we wish to estimate the mean using a sample size of n = 49. Find the probability that we could be correct within 1kg/m 2 .
Identify what you think is the best measure of variability to use for your example and explain why you believe it to be better than the others.
complete the following hypothesis test ho ? 52 ha ? lt 52 ? 0.01 using the data below.55 47 58 55 39
suppose you have a big vat of balls and that 70 of the balls are green and 30 of the balls are red. suppose you
Rachel invests heavily in municipal bonds. She wants to diversify by adding an investment whose returns do not closely follow the returns on her bonds.
What is the relative risk between exposure to the drug and malformations and what type of study design is this?
How might moderate multi collinearity cause your F test to be significant, even though none of your t tests are significant?
Find the probability that an adult Internet user does not have an account with either social networking site.
Let X be a discrete r.v. with support n, n + 1,..., 0,...,n 1, n for some positive integer n. Suppose that the PMF of X satisfies the symmetry property.
a. Determine the mean and the standard deviation of x. b. For the sample size n 5 2, determine the mean for each possible simple random sample from this population. c. For each simple random sample identified in part (b), what is the probability that..
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