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https. www.lkiunx.com/Student/Player Test.aspx?testld-11947460 yes&from; PlayerCheck yes 74605&centerwin; Quiz: Week 7 Quiz This Question: 2 pts This Test: 60 pts Time Remaining: 01:40:54 Assume a member is selected at random from the population represented by the graph. Find the SAT Critical Reading scores S probability that the member selected at random is from the shaded area of the graph. Assume the is normally distributed. R 515 200

Solution

The proability is

P(152<X<162) = P((152-149)/5.41 <(X-mean)/s < (162-149)/5.41)

=P(0.55<Z<2.40)

=0.2830 (from standard normal table)