You want to get a 95% confidence interval for the difference between the percentage of females with red hair compared to males with red h

If n= 100 and x= 80, construct a 99% confidence interval.  Give your answers to three decimals

Nabisco claims that Chip Ahoy Cookies have an x ̅=28.67 chocolate chips per cookie with a SD=2.67.  You randomly select 36 cookies from a new bag and carefully remove all the chocolate chips from each of the 36 cookies.  You find the mean of the chocolate chips for the 36 cookies is 24.27 chocolate chips per cookie.  Calculate the standard error for the chocolate chips in your experiment.  (round to the nearest hundredth).

What happens to our range when we increase the confidence level?

Construct a 96% confidence interval if x=75 and n=200. Round your answers to 3 decimal places.

Prob & Stats  Unable to solve 90% confidence interval of the differences in the nurses.

In a sample of 500 Canadians, it was found that 400 people preferred apple products. In a sample of 700 Americans it was found that 600 preferred apple products. Is the proportion Canadians who prefer apple products less than Americans. 1. Construct 95% confidence interval for difference of proportions. 2. From the confidence interval, do you think that the proportion of Canadians who prefer apple products is different from Americans.

You want to get a 90% confidence interval for the difference between the percentage of females with red hair compared to males with red hair. You sample 76 females and find 34 of them have red hair. You sample 65 males and find 33 have red hair. < p1−p2 <

Suppose you compute a 93% confidence interval. What will happen to the confidence interval if you decrease the confidence level to 91%?

Many high school students take the AP tests in different subject areas. In one year, of the 144,651 students who took the biology exam 84,698 of them were female. In that same year, of the 214,919 students who took the calculus AB exam 125,498 of them were female. Estimate the difference in the proportion of female students taking the biology exam and female students taking the calculus AB exam using a 99% confidence level. Round to four decimal places. With 99 O % confidence, it can be concluded that the true difference in the proportion of female students taking the biology exam and the proportion of female students taking the calculus AB exam (P₁ - P2) is between and