MATH 221 Statistics For Decision Making

MATH 221 Statistics for decision making week 3 quiz chapters 1,2,& 3 (100% VERIFIED ANS)

MATH 221 Statistics for decision making week 3 quiz chapters 1,2,& 3 (DeVry University)

(CO 5) A company claims that its heaters last more than 5 years. Write the null and alternative hypotheses and note which is the claim. Ho: μ = 5 (claim), Ha: μ ≥ 5 Ho: μ > 5 (claim), Ha: μ ≤ 5 Correct Answer Ho: μ ≤ 5, Ha: μ < 5 (claim) (CO 5) An executive claims that her employees spend no less than 2.5 hours each week in meetings. Write the null and alternative hypotheses and note which is the claim. Ho: μ ≤ 2.5 (claim), Ha: μ > 2.5 Correct Answer ...

(CO 4) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? (5.74, 5.90) (5.71, 5.89) (5.73, 5.87) (5.72, 5.88) Question 1 (CO 4) From a random sample of 68 businesses, it is found that the mean time that employees spend on personal issues each week is 5.8 hours with a standard devia...

MATH 221 Week 4 Homework-Statistics for Decision-Making

MATH 221 Week 3 QUIZ 2

MATH 221 Week 4 Quiz (100% Correct Answers)

MATH 221 Week 1 QUIZ

MATH 221 Week 3

MATH 221 Week 3