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Answer:
The calculated value Z = 2.734 > 2.576 at 0.01 level of significance
Null hypothesis is rejected
The claim that 75% of adults say that it is morally wrong to report all income on tax returns.
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given random sample size 'n' = 745
Given In a poll of 745 randomly selected adults, 591 said that it is morally wrong to not report all income on tax returns
sample proportion
Given Population proportion P = 0.75
Q = 1-P
Q = 1 - 0.75 = 0.25
Null Hypothesis :H₀: P=0.75
Alternative Hypothesis :H₁:P≠ 0.75
<u><em>Step(ii):-</em></u>
<em>Test statistic</em>
Z = 2.734
Level of significance ∝ = 0.01
The critical value Z =2.576
The calculated value Z = 2.734 > 2.576 at 0.01 level of significance
Null hypothesis is rejected
The claim that 75% of adults say that it is morally wrong to report all income on tax returns.