Question

A manufacturer claims that the calling range( in feet) of its 900 mhz cordless telephone is greater than that of its leading competitors. A sample of 5 phones from the manufacturer had a mean range of 1390 feet with a standard deviation of 36 feet. A sample of 11 similar phones from its competitor had a mean range of 1340 feet with a standard deviation of 33 feet.Do the results support the manufacturer claim? Let u1 be the true mean range of the manufacturer cordless telephone and u2 be the true mean range of the competitors cordless telephone. Use a significance level of q= 0.01 for the test. Assume that the population variance are equal and that the two populations are normally distributed.

1.State the null alternative hypothesis for the test.

2.compute the value of the t test statistic. Round to three decimals.

3.determine the decision rule for rejecting the null hypothesis Ho. Round to three decimal places.

4.state the conclusion.

Step 1

The provided information are:

Step 2

- The null and alternative hypotheses are:

Step 3

- The test statistic can be calcula...

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