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An electronics retailer offers an optional protection plan for a mobile phone it sells. Customers can choose
2 answers:
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Answer:
The calculated value |Z| = |-2.0375| = 2.0375<2.0541.96 at 0.02 level of significance
A women’s rights organization believes that the average value does not accurately depict the current trend in retirement.
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that the mean age of retirement for women, executives is 61.7
Given mean of the Population = 61.7
Given that the size of the sample 'n' = 82
Given that the mean of sample x⁻ = 60.8
Given that the standard deviation 'σ' = 4.0years
<u><em>Step(ii):-</em></u>
Null hypothesis:H₀: μ ≠ 61.7
Alternative Hypothesis: H₁: μ = 61.7
Test statistic
Z = -2.0375
|Z| = |-2.0375| = 2.0375< 2.054 at 0.02 level of significance
<u><em>Final answer:-</em></u>
The calculated value |Z| = |-2.0375| = 2.0375 <2.054 at 0.02 level of significance
A women’s rights organization believes that the average value does not accurately depict the current trend in retirement.
Step-by-step explanation:
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