(b)P (xbar >89.5) = __ (Round to four decimal places as needed.)
(c)P (xbar < or equals 86) = __(Round to four decimal places as needed.)
(d)P (87 < xbar < 90.15) = __ (Round to four decimal places as needed.)
(b)P (xbar >89.5) = __ (Round to four decimal places as needed.)
(c)P (xbar < or equals 86) = __(Round to four decimal places as needed.)
(d)P (87 < xbar < 90.15) = __ (Round to four decimal places as needed.)
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