A study of 14 car owners showed that their average repair bill was $192 with a standard deviation of $8 . Construct a 98% confidence interval for the population mean, \( \mu \) . Assume the population has a normal distribution. Round to the nearest cent. 

A. \( ( \$ 222.33 , \$ 256.10 ) \) 

B. \( ( \$ 115.40 , \$ 158.80 ) \) 

C. \( ( \$ 328.33 , \$ 386.99 ) \) 

D. \( ( \$ 186.33 , \$ 197.67 ) \) 

Which description is represented by a discrete graph? 

A. Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax? 

B. The temperature at 9 a.m. was 83° F and is heating up at an average rate of 6° F per hour. What is the temperature x hours later? 

C. Juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. What is the total amount of calories he consumed? 

D. A bottle contained 2,000 mL of liquid and is being poured out at an average rate of 300 mL per second. How much liquid is left in the bottle after x seconds? 

Use the given minimum and maximum data entries, and the number of classes, to find the class width, the lower class limits, and the upper class limits. Please type them as whole numbers.

1. 

Minimum = 12, maximum =79, 6 classes 

The class width is___ 

Choose the correct lower class limits below: 

A. 23, 35, 48, 59, 71, 83 

B. 24, 35, 48, 60, 72, 83 

C. 12, 24, 36, 48, 60, 72 

D. 12, 23, 36, 47, 59, 72 

Choose the correct lower class limits below: 

A. 23, 35, 48, 60, 71, 83 

B. 24, 36, 47, 59, 72, 83 

C. 23, 35, 47, 59, 71, 83 

D. 24, 36, 48, 60, 72, 83

2. 

Minimum = 8, maximum = 72, 6 classes 

The class width is___ 

Choose the correct lower class limits below: 

A. 8, 18, 30, 40, 51, 63 

B. 19, 29, 41, 52, 63, 73 

C. 18, 29, 41, 51, 62, 73 

D. 8, 19, 30, 41, 52, 63 

Choose the correct lower class limits below: 

A. 19, 30, 40, 51, 63, 73 

B. 18, 29, 40, 51, 62, 73 

C. 18, 29, 41, 52, 62, 73 

D. 19, 30, 41, 52, 63, 73

3. 

Minimum = 15, Maximum = 9, Number of classes = 8 

The class width is ___ 

Choose the correct lower class limits below: 

A. 15, 26, 37, 48, 59, 70, 81, 92 

B. 15, 25, 35, 45, 55, 65, 75, 85 

C. 16, 27, 38, 49, 60, 71, 82, 93 

D. 14, 24, 34, 44, 54, 64, 74, 84 

Choose the correct upper class limits below: 

A. 25, 35, 45, 55, 65, 75, 85, 95 

B. 24, 34, 44, 54, 64, 74, 84, 94 

C. 23, 33, 43, 53, 63, 73, 83, 93 

D. 22, 32, 42, 52, 62, 72, 82, 92

The table shows the number of high school employees by gender and position. What percent of the female employees are administrators or staff? Round your answer to the nearest percent.

22%

34%

35%

76%

17. SSE can never be

a. larger than SST 

b. smaller than SST

C. equal to 1 

d. equal to zero