SOLUTION: A random sample of size 20 drawn from a normal distribution has a sample mean of 8 and a sample standard deviation of 4. A) Compute the sample test statistic t under the null hyp

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Question 930149: A random sample of size 20 drawn from a normal distribution has a sample mean of 8 and a sample standard deviation of 4.
A) Compute the sample test statistic t under the null hypothesis H_0: Mue(mean)=7
B) State the alternate hypothesis if you believe that the population mean may be more than 7.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A random sample of size 20 drawn from a normal distribution has a sample mean of 8 and a sample standard deviation of 4.
A) Compute the sample test statistic t under the null hypothesis
Ho: Mue(mean) = 7
t(8) = (8-7)/[4/sqrt(20)] = 1/0.8944 = 1.118
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B) State the alternate hypothesis if you believe that the population mean may be more than 7.
Ha: u > 7
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Cheers,
Stan H.
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