See the attached picture/file to answer all the question Instruction: Please help me to answer all the questions correctly.To work in the word-processing department at Dewey, Cheatem, and Howe, a large center-city lawfirm, you must be able to type at least 80 words per minute. The director of the human resourcesdepartment is revising the job description. The mean typing speed of 100 samples is 93 words perminute with a population standard deviation of 7 words per minute. Assume that typing speedsfollow an approximately normal distribution. What is the confidence level of the interval (91.37,94.63) for the mean number of words typed by word processors at his law firm?а. 95%b. 90%c. 99%d. 98%In a random sample of 500 women, 120 are college graduates. With what confidence can we assertthat between 22% and 26% of women are college graduates?а. 14.75%b. 76.98%С. 2%d. 24%Which one of the following statements about a confidence interval is TRUE?a. The width of confidence interval is increased when the sample size is decreased.b. The width of confidence interval is increased when the sample size is increased.c. The wider the confidence interval, the least precise the estimate of the population parameterd. Changes in the required level of confidence, 1-alpha, do not affect the width of the confidenceinterval.

Name: See the attached picture/file to answer all the question Instruction:
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: See the attached picture/file to answer all the question Instruction: Please help me to answer all the questions correctly.To work in the word-processing department at Dewey, Cheatem, and Howe, a large center-city lawfirm, you must be able to type at