data per second passes between a consumer's computer and the internet. As of August of 2012, the standard deviation of Internet speeds across Internet Service Providers (ISPS) was 12.2 percent. Suppose a sample of 15 ISPS is taken, and the standard deviation is 13.2. An analyst claims that the standard deviation of speeds is more than what was reported. State the null and alternative hypotheses, compute the degrees of freedom, the test statistic, sketch the graph of the p-value, and draw a conclusion. Test at the 1% significance level.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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O The FCC conducts broadband speed tests to measure how much
data per second passes between a consumer's computer and the
internet. As of August of 2012, the standard deviation of Internet
speeds across Internet Service Providers (ISPS) was 12.2 percent.
Suppose a sample of 15 ISPS is taken, and the standard deviation is
13.2. An analyst claims that the standard deviation of speeds is
more than what was reported. State the null and alternative
hypotheses, compute the degrees of freedom, the test statistic,
sketch the graph of the p-value, and draw a conclusion. Test at the
1% significance level.
Transcribed Image Text:O The FCC conducts broadband speed tests to measure how much data per second passes between a consumer's computer and the internet. As of August of 2012, the standard deviation of Internet speeds across Internet Service Providers (ISPS) was 12.2 percent. Suppose a sample of 15 ISPS is taken, and the standard deviation is 13.2. An analyst claims that the standard deviation of speeds is more than what was reported. State the null and alternative hypotheses, compute the degrees of freedom, the test statistic, sketch the graph of the p-value, and draw a conclusion. Test at the 1% significance level.
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