Find the critical value za/2 that corresponds to the given confidence level. 92% Za/2 = (Round to two decimal places as needed.)

Use the Student's t distribution to find tc for a 0.90 confidence level when the sample is 25. (Round your answer to three decimal places.)

Round to three decimal places. For a confidence level of 99%, find the critical z

Construct a confidence interval of the population proportion at the given level of confidence. x=860, n = 1200, 95% confidence Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). BENGKE 202 The lower bound of the confidence interval is 691 (Round to three decimal places as needed.) The upper bound of the confidence interval is (Round to three decimal places as needed.) CON SEME ++ d kepad DAPA ...

Construct a confidence interval for p1- P2 at the given level of confidence. x1 = 26, n1 = 270, x2 = 38, n2 = 296, 99% confidence The researchers are 1% confident the difference between the two population proportions, p1 - P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)