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Please explain P-Value calculations! Thanks you! You wish to test the following claim (Ha) at a...

Please explain P-Value calculations! Thanks you!

You wish to test the following claim (Ha) at a significance level of α=0.05.

      Ho:μ=87.6
      Ha:μ<87.6

You believe the population is normally distributed and you know the standard deviation is σ=5.2. You obtain a sample mean of M=85.3 for a sample of size n=21.

What is the test statistic for this sample? (Report answer accurate to three decimal places.)
test statistic =

What is the p-value for this sample? (Report answer accurate to four decimal places.)
p-value =

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