Do Homework- mackenzie mcpherson-fair- Mozilla Firefox e https www.mathul oorn/S

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Do Homework- mackenzie mcpherson-fair- Mozilla Firefox e https www.mathul oorn/Student/PlayerHomework.aspx?homeworkId-459258420&questio; 01 Statistics Fall 2017, Thursdays Homework: Class 9 Section 7.3 Save Homework Score: 0 of 1 pt 7.3.9-T HW Score: 50%, 4 of 8 pts Question Help 5 of 8 (4 complete) | > | Use technology and the given confidence level and sample data to find the confidence interval for the population mean Assume that the population does not exhibit a normal distribution Weight lost on a diet: 90% confidence What is the confidence interval for the population mean ? kg

Explanation / Answer

we know that the confidence interval is given as

mean +- z*SD/sqrt(n) , where z = 1.64 from the z table for 90% confidence interval , given that

n = 51 , mean = 2 and sd = 3.4 , putting the values we get

2 +- 1.64*3.4/sqrt(51) , solving for plus and minus sign we get

1.219 <mu < 2.780

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