If n=340 and p (p-hat) =0.23, find the margin of error at a 95% confidence level Give your answer to three decimals

Left tail test with Zcalc = -2.26. What is the p-value of the test?

If the population average height is 67" and you take a random sample of 25 people resulting in a sample average value of 66 with a standard deviation of 2. Determine the "t" score that you would use as a test score for this data, and solve it for "t".

Describe the data that are collected for a repeated measures t-test and the hypotheses that the test evaluates.

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

Translate the statement into a confidence interval. Approximate the level of confidence.   In a survey of 1000 adults in a​ country, 78​% think teaching is one of the most important jobs in the country today. The​ survey's margin of error is ±4​%.   **PLEASE give four decimal points

A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 7.8 reproductions and the population standard deviation is known to be 2.2 If a sample of 697 was used for the study, construct the 85% confidence interval for the true mean number of reproductions per hour for the bacteria. Round your answers to one decimal place

two tail test with Zcalc = -1.74. What is the p-value of the test?

The mean of the test is 89 with a standard deviation of only 4. How likely (what probability) is there that a student scored a perfect score of 100 or better?