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A large study of the heights of 1010 adult men found that the mean height was 70 inches tall. The standard deviation was 6 inches. If the distribution of data was normal, what is the probability that a randomly selected male from the study was between 64 and 82 inches tall? Use the 68-95-99.7 rule (sometimes called the Empirical rule or the Standard Deviation rule). For example, enter 0.68, NOT 68 or 68%.
Round your answer to three decimal places.
Caution: Using tables or Excel for this may produce a wrong answer. Use the 68-95-99.7 rule.
if 30of the students have never taken a statistics class 60 have taken only one semester of a statistic class and the
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Gain follows the modern practice of using probability estimates of sales. The military division estimates its sales as follows. Find the standard deviation of the estimated profit, Z = 2000X + 3500Y.
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in a city in italy 30 of the families have a mastercard 20 have amex 25 visa 8 mc amp amex 12 visamc 6 have amex amp
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using a binomial table find the binomial probabilities px associated with given n ratio and x. a. n6 ratio 0.10 p4 b.
Find the probability that 665 or fewer college students in the sample send and receive text messages with their phones? Is this result unusual?
What is the probalility that the mnean annual snowfall during 64 randomly picked years will exceed 107.8 inches? Round your answer to four decimal places.
Determine whether descriptive or inferential statistics have been used in the statement below:
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