Question 1177043
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Hi
The population standard deviation is σ = 25, μ = 5
Sample 87:  x̄ = 4.5
α = 0.05 level - one tailed: z = -1.645
Ho:  p = 5
Ha:  p < 5

z = (4.5-5)sqrt(87)/25 = -.1865
 p = .426 > .05   Fail to Reject Ho.

Wish You the Best in your Studies.
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