Answer:
|Z| = |-0.126| = 0.126 < 1.645
Null hypothesis is accepted
<em>The retiring citizens is taken to investigate whether the new bill has raised the average age at which people actually retire. </em>
<em> μ = 57.5</em>
Step-by-step explanation:
<u><em>Explanation</em></u>:-
The average retirement age for a certain country was reported to be 56.4 years
<em>The mean of the sample x⁻ = 56.4</em>
<em>The standard deviation of the Population 'σ'= 55 years</em>
<em>The mean of the population μ = 57.5</em>
<em>Null hypothesis: H₀:The retiring citizens is taken to investigate whether the new bill has raised the average age at which people actually retire. </em>
<em> μ = 57.5</em>
<em>Alternative Hypothesis</em> : H₁: μ ≠57.5
Test statistic
<u><em>critical value:</em></u>
|Z| = |-0.126| = 0.126 < 1.645
<em>The null hypothesis is accepted </em>
<u><em>Conclusion</em></u>:-
The retiring citizens is taken to investigate whether the new bill has raised the average age at which people actually retire.
μ = 57.5