a) What sampling distribution will you use? What assumptions are you making?choose one: The Student's t. We assume that both population distributions are approximately normal with known standard deviations. The Student's t. We assume that both population distributions are approximately normal with unknown standard deviations. The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations. The standard normal. We assume that both population distributions are approximately normal with known standard deviations. b)What is the value of the sample test statistic? (Test the difference ?1 − ?2. Round your answer to three decimal places.) c) Find (or estimate) the P-value and sketch the p value. choose one: P-value > 0.250 0.125 < P-value < 0.250 0.050 < P-value < 0.125 0.025 < P-value < 0.050 0.005 < P-value < 0.025 P-value < 0.005
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a) What sampling distribution will you use? What assumptions are you making?choose one:
The Student's t. We assume that both population distributions are approximately normal with known standard deviations.
The Student's t. We assume that both population distributions are approximately normal with unknown standard deviations.
The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations.
The standard normal. We assume that both population distributions are approximately normal with known standard deviations.
b)What is the value of the sample test statistic? (Test the difference ?1 − ?2. Round your answer to three decimal places.)
c) Find (or estimate) the P-value and sketch the p value. choose one:
P-value > 0.250
0.125 < P-value < 0.250
0.050 < P-value < 0.125
0.025 < P-value < 0.050
0.005 < P-value < 0.025
P-value < 0.005
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