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ubian goats of 35 Nubian goats and record the birth weights Assume it is known that the population standard deviation of the birth weights of Nubian goats is 1 36 kg Based on your sample follow the steps below to construct a 90 confidence interval for the population mean of the birth weights for all Nubian goats If necessary consult a list of formulas a Click on Take Sample to see the results from your random sample of 35 Nubian goats Take Sample Sample size 0 Point estimate 0 Population standard deviation Critical value 0 Compute 0 00 Number of goats Sample mean 0 00 Enter the values of the sample size the point estimate for the population mean the population standard deviation and the critical value you need for your 90 confidence interval Choose the correct critical value from the table of critical values provided When you are done select Compute 35 2 00 4 31 Standard error Margin of error 4 00 Sample standard 90 confidence interval 90 confidence interval deviation 1 13 6 00 X b Based on your sample enter the lower and upper limits to graph the 90 confidence interval for the population mean of the birth weights for all Nubian goats Confidence level 99 95 90 Population standard deviation 1 36 8 00 Critical value 20 005 2 576 1 960 20 025 20 050 1 645 10 00 10 00

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