3 years ago

PLEASE HELP!!! NEED THIS ANSWERED!!!!

Mathematics

1 answer:

Nezavi [6.7K]3 years ago

4 0

Exclusive events, for OR we can add probabilities.

P(O or B) = 0.49 + 0.20 = 0.69

Answer 0.69

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A consulting firm had predicted that 35% of the employees at a large firm would take advantage of a new company Credit Union, bu

m_a_m_a [10]

Answer:

a) 0.4770

b) 3.9945

c) z-statistics seem a large value

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a. Find the standard deviation of the sample proportion based on the null hypothesis

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$p_{0}$ : 0.35

and the standard deviation σ = $\sqrt{p_{0} *(1-p_{0}) }$ = $\sqrt{0.35 *0.65 }$ ≈0.4770

b. Find the z statistic

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s is the standard deviation (0.4770)
N is the sample size (300)

putting the numbers in the formula:

z= $\frac{0.46-0.35} }{\frac{0.4770}{\sqrt{300} } }$ = 3.9945

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z-statistics seem a large value, which will cause us to reject the null hypothesis.

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Answer:

Step-by-step explanation:

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3 years ago

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