Question 6(CO6) What is the 97% confidence interval for a sample of 104 soda cans that have a mean amount

of 15.10 ounces and a standard deviation of 0.08 ounces?

A)(15.940, 15.260)

B)(15.083, 15.117)

C)(12.033, 12.067)

D)(15.020, 15.180)

Question 7

(CO6) Determine the minimum sample size required when you want to be 98% confident that the sample mean is within two units of the population mean. Assume a standard deviation of 7.55 in a normally distributed population.

A)76

B)78

C)44

D)77

Question 8

(CO6) Determine the minimum sample size required when you want to be 80% confident that the sample mean is within 1.5 units of the population mean. Assume a standard deviation of 9.24 in a normally distributed population.

A)62

B)63

C)145

D)146

Question 9

(CO6) Determine the minimum sample size required when you want to be 75% confident that the sample mean is within twenty units of the population mean. Assume a standard deviation of 327.8 in a normally distributed population

A)557

B)1422

C)727

D)356

Question 10

(CO6) In a sample of 8 high school students, they spent an average of 27.8 hours each week doing sports with a standard deviation of 3.2 hours. Find the 95% confidence interval.

A)(21.85, 34.27)

B)(24.60, 31.15)

C)(22.66, 26.94)

D)(25.12, 30.48)

 

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