6 A fast-food restaurant gave a "Customer Satisfaction Survey" in which 1500 customers rated how satisfied they were with service. The results are shown below as a table.

RatingFrequency

Extremely Satisfied 234

Satisfied 443

Neutral 246

Dissatisfied 203

Extremely Dissatisfied 374

The relative frequency of people who were dissatisfied with the service is __________.

• 29.5%
• 38.5%
• 20.3%
• 13.5%

14 Which of the following statements is true?

• According to the Central Limit Theorem, the mean of the sampling distribution is greater than the standard deviation.
• According to the Central Limit Theorem, the mean of the sampling distribution is equal to the population mean as long as the sample size is large enough.
• According to the Central Limit Theorem, the mean of the sampling distribution is equal to the standard deviation.
• According to the Central Limit Theorem, the mean of the sampling distribution is greater than the population mean.

At Priscilla's school, the final grade for her Calculus course is weighted as follows:

• Tests: 50%
• Quizzes: 30%
• Homework: 20%

16 Priscilla has an average of 87% on her tests, 100% on her quizzes, and 20% on her homework.

What is Priscilla's weighted average?

• 69%
• 77.5%
• 56.1%
• 73.4%

22Select the statement that is TRUE.

• The interquartile range is calculated by subtracting the first quartile from the third quartile.
• Theinterquartilerange is calculated by adding the first quartile with the third quartile.
• The interquartile range is the average value of a data set.
• The interquartile range covers 100% of adata set.

26 Tomijiaand her nine classmates took a standardized test. Their scores were:

42, 44, 56, 71, 74, 83, 89, 90, 90, 92

If Tomijia received an 89 on the test, which percentile is she in?

• The 60th
• The 80th
• The 90th
• The 70th