The number of chocolate chips in an 18 -ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chip (a) What is the probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive? (b) What is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) What proportion of bags contains more than 1200 chocolate chips? (d) What is the percentile rank of a bag that contains 1050 chocolate chips? (a) The probability that a randomly selected bag contains between 1100 and 1400 chocolate chips, inclusive, is (Round to four decimal places as needed.)

It is appropriate to model nonlinear relationships using correlational analysis. A) True (B) False

Find the critical value \( z_{\alpha / 2} \) that corresponds to the given confidence level. \( 94 \% \)

summarize your understanding of the role statistics play in managerial decision-making.

Use the sample data and confidence level given below to complete parts (a) through (d). A drug is used to help prevent blood clots in certain patients. In clinical trials, among 4140 patients treated with the drug, 137 developed the adverse reaction of nausea. Construct a \( 90 \% \) confidence interval for the proportion of adverse reactions. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)

The bivariate hypothesis-testing procedure that is used when both the independent and dependent variables are continuous is (A) Continuous hypothesis test (B) Pearson's correlation (C) Analysis of variance (D) continuous samples t-test