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Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were female. In that same year, of the 211,693 students who took the calculus AB exam 102,598 of them were female ("AP exam scores," 2013). Estimate the difference in the proportion of female students taking the biology exam and female students taking the calculus AB exam using a 90% confidence level.
What critical value t* from table D should be used to calculate the margin of error for a confidence interval for the mean of the population in each of the following situations?
assume that you have a box with an equal number of 4 6 8 chips.a. find the population mean and the standard
How many units would have to be sampled to be 95% confident that you can estimate the fraction of defective parts within 2% (using the information from today's sample--that is using the result that )?
1. A card drawn from a well-shuffled deck of 52 cards, what is the probability that the drawn card is a red ace?
Assuming the probability distribution of the sleep time to be normal with a standard deviation of 0.8 hours, compute the following.
How large of a sample should be studied if the standard deviation from a previous study was 26 cents and he wants his estimate to be accurate to within 15 cents?
Take a confidence interval for the difference in the average of renting between the first andthird hotel.
Find a Dodge-Romig single sampling plan if the lot size is 2200 and LQL = 5.0%. Determine and interpret the AOQL for the plan.
Using two-tailed test with α = .05, is there significant difference between two treatment conditions? Calculate r2 to measure percentage of variance accounted for by treatment effect.
A sample of 49 pieces of cloth reveals a sample mean breaking strength of 69.1 pounds. State the null and alternative hypotheses.
For any fixed value of k (k = 1,2, ... ). Determine the conditional distribution of Xl given that X, + X, = k.
To what extent were your political values shaped by family, by school experiences, by friends, and by the media?
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