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Assignment 2 -Sampling, Estimat + X -> C A https:/ewconnect.mheducation.com/flow/connect.html O To Apps G Google Assignment 2-Sampling, Estimation and Confidence Intervals i Saved Help Save & Exit Submit 15 Given the following pairs of z-values, find the area under the normal curve between each pair of z-values: (Round the final answers to 4 decimal places.) a. z= -1.5 and z = 1.75 Area b. z= 1.23 and z = 2.71 Area c. z= -2.58 and z= -1.05 Area d. z= -2.45 and z= -0.79 Area Mc Graw Hill O Type here to search emo S ENG 11:04 PM US 2019-07-04 EAssignment 2 -Sampling, Estimat + X -> C A https:/ewconnect.mheducation.com/flow/connect.html O To Apps G Google Assignment 2 -Sampling, Estimation and Confidence Intervals i Saved Help Save & Exit Submit 14 Dottie's Tax Service specializes in tax returns for professional clients, such as physicians, dentists, accountants, and lawyers. A recent audit of the returns she prepared indicated that an error was made on 5% of the returns she prepared last year. Use the normal approximation to the binomial distribution to answer all parts of this question. Assuming this rate continues into this year and she prepares 60 returns, what is the probability that she makes errors on: (Round z-score computation to 2 decimal places and the final answers to 4 decimal places.) a. More than six returns? Probability b. At least six returns? Probability c. Exactly six returns? Probability Mc Graw Hill O Type here to search emo S ENG 11:04 PM US 2019-07-04 EAssignment 2 -Sampling, Estimat + X -> C A https:/ewconnect.mheducation.com/flow/connect.html O To : Apps G Google Assignment 2-Sampling, Estimation and Confidence Intervals i Saved Help Save & Exit Submit 13 Assume a binomial probability distribution with n = 40 and p = 0.55. Compute the following: a. The mean and standard deviation of the random variable. (Round the final answers to 2 decimal places.) Mean Standard deviation b. The probability that X is 25 or greater. (Round the final answer to 4 decimal places.) Probability c. The probability that X is 15 or less. (Round the final answer to 4 decimal places.) Probability d. The probability that X is between 15 and 25 inclusive. Use the normal approximation to the binomial distribution. (Round the final answer to 4 decimal places.) Probability Mc Graw Hill O Type here to search emo S ENG 11:04 PM US 2019-07-04 EAssignment 2 -Sampling, Estimat + X -> C https:/ewconnect.mheducation.com/flow/connect.html O To Apps G Google Assignment 2 -Sampling, Estimation and Confidence Intervals i Saved Help Save & Exit Submit 11 A normal distribution has a mean of 80 and a standard deviation of 14. Refer to the table in Appendix B.1. Determine the value above which 80% of the values will occur. (Round z-score computation and the final answer to 2 decimal places.) X Mc Graw Hill O Type here to search S ENG 11:04 PM US 2019-07-04 E