A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 580 babies were born, and 319 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born. Based on the result, does the method appear to be effective? nothingless than pless than nothing (Round to three decimal places as needed.)

No, Method is not effective.

Step-by-step explanation:

Let x be the number of girls = 319

and n be the total number of babies = 580

Then, proportion

Standard Error,

The level of significance is:

Confidence Interval:

Since 0.50 lies in the interval hence we fail to reject

Thus, the method does not appear to be effective.

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.