Question

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%.

Answer #1

The worldwide market share for a web browser was 20.5% in a
recent month. Suppose that a sample of 200200 random students at a
certain university finds that 5050 use the browser.
Suppose that a sample of n=800 students at the same university
(instead of n=200) determines that 25% of the sample use the web
browser. At the 0.05 level of significance, is there evidence that
the market share for the web browser at the university is greater
than the...

The worldwide market share for a web browser was 20.5% in a
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summary for marriages
Mean
3407.94
Median
2364.00
Standard Deviation
3988.42
Minimum
136.00
Maximum
21451.00
n=52
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