I WILL GIVE U 30 POINTS AND I WILL MARK U BRAINLIEST PLZ HELP ME I BEG U XX
1 answer:
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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.
Answer:
Step-by-step explanation:
Let X be the no of adults whose feelings the state of morals is poor.
X has two outcomes and each trial is independent of the other
X is Bin with p = probability for success in each trial =40%=0.40
n=no of adults surveyed = 55
a) The probability that exactly 21 of those surveyed feel the state of morals is poor is
(b) The probability that no more than 22 of those surveyed feel that state of morals is poor is
=
(c) The probability that more than22 of those surveyed feel the state of morals is poor is
(d) The probability that 15 or 16 believe the state of morals is poor is
=