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H0 : µ = 1m Ha : µ < 1m n=25 observed mean= 0.975m standard deviation...

H0 : µ = 1m

Ha : µ < 1m

n=25

observed mean= 0.975m

standard deviation = 0.05m

1. Write down the appropriate formula for the test statistic and calculate

2. what is the sampling distribution for this test statistic?

3. Level of significance is 0.05, what is the rejection region?

4. Is this statistically significant? Why/why not?

(i) what does this say about the hypotheses?

5. Would the answer to 4. be different if the level of significance was 0.01? why?

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