Winter17-Math1342-ONLINE CRN12490 Hector Hemandez & 12/31/17 7:12 PM Homework: H

Question

Winter17-Math1342-ONLINE CRN12490 Hector Hemandez & 12/31/17 7:12 PM Homework: HW Sect 7.1-7.3 Score: 0 of 1 pt 7.3.9-T Use technology and the given condene eel and sample data to find the confidence interval for the population mean y Assume that the population does not eshibta 32 of 36 (33 complete) Score: 91.67%, 33 of 36 pts Question Helpo Weight lost on a det 0% confidence n- 61 -20kg 37 kg Enter your answer in the edit felds and then click Check Answer Cloar A ch videon) aestion 22 (M) Question 23 (1/T) Question 24 (1/1) 20 9 WERT

Explanation / Answer

Sol:

df=n-1=61-1=60

alpha=1-0.9=0.1

alpha/2=0.1/2=0.05

90% confidence interval for mean is

sample mean-tcrit(samplesd)/sqrt(n),sample mean+tcrit(samplesd)/sqrt(n)

2-1.6706(3.7/sqrt(61),2+1.6706(3.7/sqrt(61)

1.2,2.8

lower limit=1.2

upper limit=2.8

1.2<mu<2.8

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