Question

Most adults would not erase all of their personal information online if they could. A software firm survey of 431 randomly selected adults showed that 42​% of them would erase all of their personal information online if they could. express the original claim in symbolic form get parameter

Answer 1

Answer: The test statistic is -3.322.

Explanation:

Since we have given that

n = 431

`\hat{p}=0.42`

Hypothesis would be :

`H_0:p=0.5\\\\H_1:p\\eq 0.5`

So, the test statistic would be

`z=\frac{\hat{p}-p}{\sqrt{(p(1-p))/(n)}}\\\\z=\frac{0.42-0.5}{\sqrt{(0.5* 0.5)/(431)}}\\\\z=(-0.08)/(0.02408)\\\\z=-3.322`

Hence, the test statistic is -3.322.