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The mean annual tuition and fees in the 2013-2014 academic year for a sample of 23...

The mean annual tuition and fees in the 2013-2014 academic year for a sample of 23 private colleges in California was $38,500 with a standard deviation of $7700. A dotplot shows that it is reasonable to assume that the population is approximately normal. Can you conclude that the mean tuition and fees for private institutions in California is greater than $35,000? Use the α=0.05 level of significance and the P-value method with the TI-84 Plus calculator.

Math   Statistics-And-Probability   
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Answer #1

Press STAT -> T Test

P value = 0.0201

Decision based on P value
Reject null hypothesis if P value < α = 0.05 level of significance
P - value = 0.0201 < 0.05 ,hence we reject null hypothesis
Conclusion :- Reject null hypothesis

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