7. Hypothesis Testing with the P-Value Method A researcher claims that the mean sodium content of sandwiches at Restaurant A is less than the mean sodium content of sandwiches at Restaurant B. The mean sodium content of 22 randomly selected sandwiches at Restaurant A is 670 mg. Assume the population standard deviation is 20 mg. The mean sodium content of 28 randomly selected sandwiches at Restaurant B is 690 mg. Assume the population standard deviation is 30 mg. At a value method. Clearly show all steps. 0.05, is there enough evidence to support the claim? Use the P- %3D

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7. Hypothesis Testing with the P-Value Method
A researcher claims that the mean sodium content of sandwiches at Restaurant A is less than the
mean sodium content of sandwiches at Restaurant B. The mean sodium content of 22 randomly selected
sandwiches at Restaurant A is 670 mg. Assume the population standard deviation is 20 mg. The mean
sodium content of 28 randomly selected sandwiches at Restaurant B is 690 mg. Assume the population
standard deviation is 30 mg. At a =
value method. Clearly show all steps.
0.05, is there enough evidence to support the claim? Use the P-
SAMSUNG
Transcribed Image Text:8/8 90% 7. Hypothesis Testing with the P-Value Method A researcher claims that the mean sodium content of sandwiches at Restaurant A is less than the mean sodium content of sandwiches at Restaurant B. The mean sodium content of 22 randomly selected sandwiches at Restaurant A is 670 mg. Assume the population standard deviation is 20 mg. The mean sodium content of 28 randomly selected sandwiches at Restaurant B is 690 mg. Assume the population standard deviation is 30 mg. At a = value method. Clearly show all steps. 0.05, is there enough evidence to support the claim? Use the P- SAMSUNG
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