Determine probability that mean of their test scores
A final exam in Math 160 has a mean of 73 with the standard deviation 7.8. If 24 students are randomly selected, determine the probability that the mean of their test scores is less than 76
A) 0.8962 B) 0.0301 C) 0.9699 D) 0.9203
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Calculate the z value associated with 25 (Round your answer to 2 decimal places.) What proportion of population is between 19 and 25? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
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A poll of 1700 randomly chosen students in grades 6 thru 8 was conducted as well as found that 53% result a statistic or a parameter? Explain?
When the actual value of mu is close to hypothesized value of mu, what can be said about the value of beta
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Inspection of a random sample of 28 American Airlines MD?80 aircraft showed that 17 needed repairs to fix a wiring problem that might compromise safety. (a) How large a sample would be needed to estimate the true proportion of jets with the wiring
A report states that 38% of home owners had a vegetable garden. How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 6% with 99% confidence?
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