CD Camera produces a new camera that it claims can take an average of at least 7 photographs per second. A test of 49 randomly selected cameras yielded the following results:

x=6.8 photos/sec

s=0.58 photos/sec

A. Does the sample data present sufficient evidence to reject the manufacturer's claim (use alpha = 0.05)? Use the 5 step hypothesis testing procedure.

1. Formulate the null and alternative hypotheses.
2. Determine the criterion for rejection or non-rejection of the null hypothesis.
3. Calculate the test statistic.
4. Compare the test statistic to the rejection region and make a judgement about the null and alternative hypotheses.
5. Explain your conclusion above.