SOLUTION: A reporter bought hamburgers at randomly selected stores of two different restaurant chains, and had the number of Calories in each hamburger measured. Can the reporter conclude,
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-> SOLUTION: A reporter bought hamburgers at randomly selected stores of two different restaurant chains, and had the number of Calories in each hamburger measured. Can the reporter conclude,
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Question 729105: A reporter bought hamburgers at randomly selected stores of two different restaurant chains, and had the number of Calories in each hamburger measured. Can the reporter conclude, at = 0.05, that the hamburgers from the two chains have a different number of Calories?
Chain A Chain B
Sample size 5 8
Sample mean 255 Cal 310 Cal
Sample standard deviation 21 Cal 25 Cal
No, because the test value –0.33 is inside the noncritical region
Yes, because the test value –0.33 is inside the noncritical region
Yes, because the test value –4.26 is outside the noncritical region
No, because the test value –1.19 is inside the noncritical region
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