Question

Use R statistical software for the following: A random sample of 172 women were given the...

Use R statistical software for the following:

A random sample of 172 women were given the flu vaccine while pregnant, and a control sample of 168 women were not given the vaccine.

1. 8.4% of the control group gave birth before 37 weeks of gestation.

(a) Calculate a standard error for this estimate.

## R code

(b) Calculate a 95% confidence interval for the true population percentage.

## R code

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Answer #1

Ans:

(a) 0.02140093

(b) lower limit = 0.04205494

Upper limit = 0.1259451

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