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Mathematics, 04.03.2021 20:40 sabrinarea041904
A researcher wants to conduct a study of the access speed of hard drives and estimate the population mean with 99% confidence. How many hard drives should he include in his sample to be accurate within 3 nanoseconds if the standard deviation of the population is known to be 8.0 nanoseconds?
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Mathematics, 21.06.2019 17:00
The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.
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Mathematics, 22.06.2019 00:30
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A researcher wants to conduct a study of the access speed of hard drives and estimate the population...
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