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Suppose that a sample of n=400 students at the same university​ (instead of n=200​) determines that...

Suppose that a sample of n=400 students at the same university​ (instead of n=200​) determines that 25​% of the sample use the web browser. At the .05 level of​ significance, is there evidence that the market share for the web browser at the university is greater than the worldwide market share of ​20.5%?

a. Calculate the test statistic for the second sample.

b. What is the​ p-value?

c. State the conclusion of the test. _____ the null hypothesis. There is _____ evidence to conclude that the market share at the university is ____ the worldwide market share of ​20.5%.

Math   Statistics-And-Probability   
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