A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.5; 2.9; 3.1; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4. B Homepage - 2021-SP-PSYC-210:B Grades - 2021-SP-CHEM-1151-B6 chemicalreactions.docA HW7 SP 2021 CONFIDENCE INTE Xb Answered: NOTE: If you are using xA webassign.net/web/Student/Assignment-Responses/submit?dep=25524526&tags=autosave#question4720559_8RClosed TabsA Current StudentsB Homepage - Augus... W MATH 1401 SPRIN..Program: Bachelor..SA Apply for Financial..n HomeFree Paycheck Calc.A Paraphrasing Tool ..A Essaybot: Free Essa...E Reading list>>O Part (e)Construct a 95% confidence interval for the population mean length of time.(i) State the confidence interval. (Round your answers to two decimal places.)(ii) Sketch the graph.aC.L. =l2(iii) Calculate the error bound. (Round your answer to two decimal places.)O Part (f)What does it mean to be "95% confident" in this problem?O We are 95% confident that the effectiveness of a tranquilizer lies between the interval values.O This means that if intervals are created from repeated samples, 95% of them will contain the true population average length of effectiveness of tranquilizers.O This means that we are 95% confident that the average length of effectiveness of tranquilizers in the sample of 9 people is between the interval values.This moons that the choncec of o tronauilizaffoctive ic 059/2:50 PMP Type here to search3075%中)3/28/202118+ 8

Name: A pharmaceutical company makes tranquilizers. It is assumed that the d
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Description: A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquil