Asked by Jenny
The TreeDropped Fruit Company wants to sell its apples in pink and yellow gift boxes. To design the boxes, the company needs to estimate the average diameter of their apples. A random sample of 50 apples has a mean of 4.1 inches. Using previous research you assume a population standard deviation of .4 inches.
What is the point estimate in this scenario? Is it an unbiased estimator?
What is the critical z value for a 95% interval?
What is the margin of error for a 95% interval in this scenario?
What is the 95% confidence interval for this scenario?
What is the point estimate in this scenario? Is it an unbiased estimator?
What is the critical z value for a 95% interval?
What is the margin of error for a 95% interval in this scenario?
What is the 95% confidence interval for this scenario?
Answers
Answered by
PsyDAG
I assume you are only concerned with the apples being too big to fit in the box.
Ho: mean = 4.1
Ha: mean > 4.1
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) and its Z score.
95% = mean + Z SEm
SEm = SD/√n
Ho: mean = 4.1
Ha: mean > 4.1
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (.05) and its Z score.
95% = mean + Z SEm
SEm = SD/√n
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