You\'ve already done this problem. Score on last attempt: 0 out of 20 (parts: ?

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You've already done this problem. Score on last attempt: 0 out of 20 (parts: ? 0/5.* 0/5. 0/5.* 05) Score in gradebook:-0 out of 20 (parts:?0/5,?0/5,?05.05) Reattempt this question Question with last attempt is displayed for your review only Assume that X has a normal distribution with the specified mean and standard deviation. Find the cutoff values of the middle 18%. 210.305 (Round your answer to 3 decimal places) (Round your answer to 3 decimal places) Low: a(Round your answer to 3 decimal places) High:2(Round your answer to 3 decimal places) Message instructor about this question MacBook Air F8 F5 F6 F7 F1 F2 F3

Explanation / Answer

a) Z1

Use Excel function

NORMSINV(0.41)

= -0.228

b) z2 = 0.228

c) x1 = -0.228*2.5+5

x1 = 4.431

d) x2 = 0.228*2.5+5

x2= 5.569

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