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Answer :
The value of the test statistic is -2.83.
What is the calculated test statistic?
The test statistic is a measure used in hypothesis testing to determine the likelihood of observing a particular sample result if the null hypothesis is true.
In this case, we are testing the claim that the mean body temperature of the population is equal to 98.5°F.
To calculate the test statistic, we can use the formula:
test statistic = (sample mean - hypothesized mean) / (standard deviation / √sample size)
Given that the sample mean is 98.6°F, the hypothesized mean is 98.5°F, the standard deviation is 0.5°F, and the sample size is 73, we can plug these values into the formula:
test statistic = (98.6 - 98.5) / (0.5 / √73) = 0.1 / (0.5 / 8.54) = 0.1 / 0.0587 ≈ -2.83
Therefore, the value of the test statistic for this testing is approximately -2.83.
Learn more about hypothesis testing
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