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
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?
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1 answer