Below are the null and alternative Hypothesis,
Null Hypothesis: μ = 160
Alternative Hypothesis: μ > 160
Test statistic,
t = (xbar - mu)/(s/sqrt(n))
t = (183 - 160)/(12/sqrt(25))
t = 9.583
P-value Approach
P-value = 0
As P-value < 0.05, reject the null hypothesis.
Conclusion
There is sufficient evidence to conclude that sample comes from a
population with mean score greater tahn 160
Assume that a simple random sample has been selected from a normally distributed population and test...
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