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In a hypothesis test, the null hypothesis of < 81 is rejected because the P-value was...

In a hypothesis test, the null hypothesis of < 81 is rejected because the P-value was 0.0465. The sample size “n” was 55 and the sample mean was 84.5. Find the value of the population standard deviation “σ”.

Solutions

Expert Solution

hypothesis:-

[ as the null contains the < sign,alternative will contain > sign]

given data are:-

p value = 0.0465

[ in any blank cell of excel type =NORMSINV(0.9535) ]

now we have,

the value of the population standard deviation “σ” = 15.45

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orchestra answered 2 years ago
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