Use the given confidence interval to find the margin of error and the sample proportion. (0.775,0.799) E = 0.012 (Type an integer or a decimal.) p=(Type an integer or a decimal.)

statistics practitioner took a random sample of 48 observations from a population whose standard deviation is 23 and computed the sample mean to be 100.   Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits.   A. Estimate the population mean with 95% confidence.   Confidence Interval =  B. Estimate the population mean with 95% confidence, changing the population standard deviation to 47;   Confidence Interval =  C. Estimate the population mean with 95% confidence, changing the population standard deviation to 10;   Confidence Interval =

It is desired to estimate the proportion of cannabis users at a university. What is the sample size required to if we wish to have a 95% confidence in the interval and an error of 10%? 385 68 10 97

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.