Show ALL work including steps used during computations using formulas and diagrams when appropriate. Write a...

Show ALL work including steps used during computations using formulas and diagrams when appropriate. Write a statement explaining the meaning of your computations (conclusions) for all problems- hypothesis tests and confidence intervals.

A researcher studied whether pregnant women who consumed more than 800 mg of caffeine per day had babies with a lower birth weight (in lbs). The results are in the table below:

Caffeinated women’s babies weights	7.5	6.7	5.2	6.8	7.4	7.7	5.6	6.9
Non-caffeinated women’s babies weights	7.8	7.6	8.1	7.5	7.1	7.2	7.9

Test to determine if the use of caffeine lowered birth weights using α = 0.05.

Solutions

Expert Solution

Let denote the mean of Caffeinated women’s babies weights and Non-caffeinated women’s babies weights respectively.

There is sufficient evidence to support the claim that use of caffeine lowered birth weights.

orchestra answered 1 year ago

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