Write the given expression as a single trigonometric function.
1 answer:
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Answer:
a)At the 10% significance level, we fail to reject the null hypothesis.
b) P-value is ≈ 0.48
Step-by-step explanation:
Let p be the proportion of the auditors agree with the statement "Cash flow is an important indicator of profitability."
Then,
: p=0.5
: p≠0.5
Test statistic can be calculated as:
z= where
- p(s) is the sample proportion of the auditors agree with the statement. (
=0.525)
- p is the proportion assumed under null hypothesis. (0.5)
- N is the sample size (200)
Using these numbers we get:
z=≈0,707
and p(z) is ≈ 0.48. Since 0.48>0.10, the result is not significant at 90% level. Therefore we fail to reject the null hypothesis.