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The mean body temperature of adults is 98.6 F. However, it is now commonly believed that the mean body temperature of a healthy adult is

The mean body temperature of adults is 98.6 F. However, it is now commonly believed that the mean body temperature of a healthy adult is less than what it seems to be. To test this hypothesis a researcher measures the following body temperatures from a random sample of healthy adults.

98.2, 98.6, 98.5, 98.6, 97.7, 98.4

(a)Find the value of the test statistic.

(b)Find the 10% critical value.

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