. State the null hypothesis and the alternative hypothesis. b. Is the test left-tailed, right-tailed, or two-tailed? c. Find the test value

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6.) The mean weight for bags of chips is believed to be 16oz. A researcher believes that the actual mean weight is significantly lower than this. The researcher measures the weights of a sample of 31 bags, and finds that the mean of the sample is 15oz, with a sample standard deviation of 4oz. For  = 0.01, determine if the researcher is correct.
a. State the null hypothesis and the alternative hypothesis.
b. Is the test left-tailed, right-tailed, or two-tailed?
c. Find the test value 
d. Find the critical value or p value
e. Should you reject the null hypothesis?
f. Summarize the results

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