The number of wiring packages that can be assembled by a company's employees has a normal distribution, with a mean equal to 19.
5 per hour and a standard deviation of 1.5 per hour. (a) What are the mean and standard deviation of the number x of packages produced per worker in an 8-hour day
1 answer:
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Answer:
B) 47.5%
Step-by-step explanation:
Refer to the normal distribution chart attached. If 130 is 2 standard deviations higher than the mean (ignore the numbers beneath the percentages), then by the empirical rule, this means that 34%+13.5%=47.5% of adults are between IQs of 100 and 130. Therefore, option B is correct.
