A manufacturer claims that the calling range (in feet) of its 900-MHz cordless telephone is greater...

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A manufacturer claims that the calling range (in feet) of its900-MHz cordless telephone is greater than that of its leadingcompetitor. A sample of 9 phones from the manufacturer had a meanrange of 1180 feet with a standard deviation of 35 feet. A sampleof 15 similar phones from its competitor had a mean range of 1120feet with a standard deviation of 20 feet. Do the results supportthe manufacturer's claim? Let Î¼1 be the true mean range of themanufacturer's cordless telephone and Î¼2 be the true mean range ofthe competitor's cordless telephone. Use a significance level ofÎ±=0.1 for the test. Assume that the population variances are equaland that the two populations are normally distributed.
Step 2 of 4 : Compute the value of the t test statistic. Roundyour answer to three decimal places.
Step 1 of 4: State the null and alternative hypotheses for thetest.
Step 2 of 4: Compute the value of the t test statistic. Roundyour answer to three decimal places. Step 3 of 4: Determine thedecision rule for rejecting the null hypothesis H0. Round youranswer to three decimal places.
Step 4 of 4: State the test's conclusion.

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Step 1 of 4Null Hypothesis H0 There is no difference in truemean range of manufacturers cordless teleophoneand true mean rangeof the competitors cordless See Answer

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