A dietitian wants to know the average time spent on breakfast in a primary school. The dietitian randomly samples 16 students and finds that the average is 15.8 minutes with a standard deviation of 2.31 minutes. Assume that the distribution of the time spent on the breakfast is normally distributed. The dietitian finds a 90% confidence interval for this sample is (14.788, 16.812). Select one or more: a. The margin of error is 1.012. b.The margin of error is 2.024 c. The margin of error is 0.950. d. We believe that the true mean time spent on breakfast in this primary school is between 14.788 and 16.812 minutes. e. If we take many other samples from this population, 90% of them will have a sample mean that is between 14.788 and 16.812. f. There is a 90% chance that the true mean is between 14.788 and 16.812 minutes.
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A dietitian wants to know the average time spent on breakfast in a primary school. The dietitian randomly samples 16 students and finds that the average is 15.8 minutes with a standard deviation of 2.31 minutes. Assume that the distribution of the time spent on the breakfast is
Select one or more:
a. The margin of error is 1.012.
b.The margin of error is 2.024
c. The margin of error is 0.950.
d. We believe that the true mean time spent on breakfast in this primary school is between 14.788 and 16.812 minutes.
e. If we take many other samples from this population, 90% of them will have a sample mean that is between 14.788 and 16.812.
f. There is a 90% chance that the true mean is between 14.788 and 16.812 minutes.
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