A manufacturer claims that the calling range (in feet) of its 900-MHz cordless telephone is greater than that of its leading competitor. A sample of 18 phones from the manufacturer had a mean range of 1100 feet with a standard deviation of 31 feet. A sample of 12 similar phones from its competitor had a mean range of 1090 feet with a standard deviation of 29 feet. Do the results support the manufacturer's claim? Let , be the true mean range of the manufacturer's cordless telephone and #₂ be the true mean range of the competitor's cordless telephone. Use a significance level of a = 0.1 for the test. Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 4: State the null and alternative hypotheses for the test. Answer Ho: P -M₂ Hai Mi Y M₂ Keypad

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