Use the given data to find the minimum sample size required to estimate a population proportion or percentage margin of error=0.09, confidence interval = 95%, from a prior study,p-cap is estimated by the decimal equivalent of 56% n =?

A repeated measures study  is done  to  measure the  change  in  IQ test scores  taken on Monday versus  those taken  on Friday.  There were n=9 participants  in  the  study.  The mean difference  was MD =-5 points  and  the  standard error  for  the  mean difference  was SMD=0.51.  Construct a 95% confidence  interval to estimate the  size of the population  mean difference.

We want to estimate the mean number of chocolate chips per cookie for a large national brand. How many cookies would have to be sampled to estimate the true mean number of chocolate chips per cookie, within 2 chocolate chips and the 98% confidence? Assume that s=11.2 chocolate chips, from a prior sample

A 95% confidence interval for the population mean is 18 < mu < 24. What is the sample mean?

The mean score on the math portion of the ACT for the year 2000 is μ = 20.7. A sample of 20 students in a local school district had a mean of 22.95. Using the sample, a 95% confidence interval estimate for the mean is (20.76, 25.14).  State the point estimate for the mean ACT score for students. Based on this sample information , do you believe that the local students have a mean different from the general population? Why?     22.95 is in the center of the interval. The means are definitely not different.     22.95 is just outside the 95% confidence interval. Can't say the means are really different.     22.95 is not equal to 20.7. The means are definitely different.     20.7 is just outside the 95% confidence interval. Can't say the means are really different.

If x=76 ₁² = 14 and n=65, Construct a 95% Confidence interval estimate of the population mean, pe الكيك

Apply the t-interval procedure to find a 95% confidence interval for the mean arterial blood pressure of 8 children sampled if x=85.99 mm Hg and s=8.08 mm Hg

Determine the margin of error in estimating the population mean, μ. Based on a sample of size 44, a 95% confidence interval for the mean score of all students, μ, on an aptitude test is from 67 to 72. Find the margin of error.