Much concern has been expressed regarding the practice of using nitrates as meat preservatives. In one study involving possible effects of these chemicals, bacteria cultures were grown in a medium containing nitrates. The rate of uptake of radio-labeled amino acid (in dpm, disintegrations per minute) was then determined for each culture, yielding the following observations. 7,252 6,872 9,637 6,864 9,099 5,841 8,953| 7,975 7,069| 7,499 7,888 8,175 7,529 8,729 7,465 A USE SALT Suppose that it is known that the mean rate of uptake for cultures without nitrates is 8,000. Do the data suggest that the addition of nitrates results in a decrease in the mean rate of uptake? Test the appropriate hypotheses using a significance level of 0.1o. Find the test statistic and P-value. (Use technology to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) P-value = State your conclusion. O Fail to reject H.. We have convincing evidence that the mean rate of uptake is reduced by the addition of nitrates. O Reject H. We do not have convincing evidence that the mean rate of uptake is reduced by the addition of nitrates. O Fail to reject Ho. We do not have convincing evidence that the mean rate of uptake is reduced by the addition of nitrates. O Reject H. We have convincing evidence that the mean rate of uptake is reduced by the addition of nitrates.

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