Question
A sample of 12 packages of chips is chosen from a shipment in which the weights of the packages are known to be normally distributed.
"A sample of 12 packages of chips is chosen from a shipment in which the weights of the packages are known to be normally distributed. The sample has an average weight of 106 grams, with a standard deviation of 5.2 grams. Is there evidence that the packages weigh significantly more than the 100 grams on the label?"
Choose the best checking of conditions.
Question 7 options:
It is normally distributed, so conditions for a TTest are met. | |
It is not normally distributed, so conditions for a TTest are not met. | |
np(1-p) > 10, so conditions for a 1-PropZTest are met. | |
The sample size is larger than 30, so conditions for a TTest are met. |
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