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In: Statistics and Probability

Given a normal distribution with mu equals 100 and sigma equals 10, complete parts? (a) through?...

Given a normal distribution with mu equals 100 and sigma equals 10, complete parts? (a) through? (d). a. What is the probability that Upper X greater than 85 ?? The probability that Upper X greater than 85 is 0.9332 . ?(Round to four decimal places as? needed.) b. What is the probability that Upper X less than 95 ?? The probability that Upper X less than 95 is 0.3085 . ?(Round to four decimal places as? needed.) c. What is the probability that Upper X less than 80 or Upper X greater than 110 ?? The probability that Upper X less than 80 or Upper X greater than 110 is 0.1815 . ?(Round to four decimal places as? needed.)

I need help with d. in bold below

d. 99 ?% of the values are between what two? X-values (symmetrically distributed around the? mean)? 99 ?% of the values are greater than nothing and less than nothing . ?(Round to two decimal places as? needed.)

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orchestra answered 2 years ago
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