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Q y https : //twitter.comi s Alpha Gam un https://uab.instruct 1 http://uab-mlpui.opa um Login l BlazerID IBUSINESS STATISTICS instructions I help Final exam Save & Exit | Submit Question 11 (of 12) Time remaining: 1:15:35 value 10.00 points We use the t distribution to construct population standard deviation is not find to2 df for the following scenarios. Use Table 2 (Round your answers to 3 decimal p a confidence interval for the population mean when the underlying known. Under the assumption that the population is normally distributed tar2.aff a. A 90% confidence level and a sample of 11 observations. b. A 95% confidence level and a sample of 11 observations. C. A 90% confidence level and a sample of 24 observations. d. A 95% confidence level and a sample of 24 observations. eBook & Resources pulation po

Explanation / Answer

a) Use Excel function

T.INV(0.95,10)

= 1.812

so, answer is 1.812, 10

b) Use Excel function

T.INV(0.95+(0.05/2),10)

= 2.228

so, answer is 2.228, 10

c) Use Excel function

T.INV(0.95,23)

= 1.714

so, answer is 1.714, 23

d) Use Excel function

T.INV(0.95+(0.05/2),23)

= 2.069

so, answer is 2.069, 23

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