4. z = xbar - mud/sigma / sq rt. n)
(a) = 49.85 -50/0.1
So required p = z between 1.5 and -1.5
p = 0.8664
(b). p= 0.5 because z=0
p = 0.5
Can you do this question over with these numbers because i'm still confused.Screenshot (21).png
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