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A Frozen Food Company claims that its Healthy Selection frozen TV dinners have no more than 8 grams of fat. A consumer testing agency tested a random sample of twelve such dinners and found that the mean fat content was 14.5 grams, with a standard deviation of 6.5 grams.
a. Construct a 95 percent confidence interval for the true mean grams of fat in the TV dinners.
b. Estimate the minimum sample size necessary to estimate the true mean grams of fat to within plus or minus 2 grams with 98 percent confidence.
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Expalin what would be the appropriate statistical procedure to test the following hypothesis: Triglyceride values are a good predictor of weight in obese adults.
Eighteen first interviews are usually scheduled per day. What is the probability that the average length of time for the eighteen interviews will be 40 minutes or longer?
Let's say I have a new drug that I think helps diabetics. So I perform clinical trials in accordance with the FDA requirements. I give one randomly selected groups of diabetics the drug, and another sample gets a placebo pill.
What is the number of neurons n such that the probability of more than n neurons have higher firing rates for Condition 1is 0.99?
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From a random sample we know that the average duration of unemployment in a low developed region A is 147 days (with standard deviation sA = 32 days and nA = 230 unemployed).
A researcher is looking at the relationship between home-schooling and achievement. She is hypothesizing that the home-schooled children will score higher than non home-schooled children on a standardized achievement test.
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