Solve the problem.The pie chart shows the classifications of students in a statistics class.What percentage of the class consists of freshman, sophomores, or juniors?

Solve the problem.A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $320 ,000 with a standard deviation of $40,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $200,000 and $440,000?

Solve the problem.A realtor is analyzing recent sale prices of 3 bedroom homes in her area. The mean sale prices of recent sales was $310 ,000 with a standard deviation of $20,000. Assuming no information concerning the shape of the distribution is known, what percentage of homes sold between $270,000 and $350,000?

Solve the problem.Because of the possible legal consequences, many people in a sample of the U.S. population chose not to participate in a survey regarding illegal drug use. What type of problem has occurred?

Solve the problem.A study was designed to investigate the effects of two variables — (1) a student’s level of mathematical anxiety and (2) teaching method — on a student’s achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 300 with a standard deviation of 40 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 68% of the students score?

Solve the problem.What number is missing from the table? Year inCollege Frequency Relative Frequency Freshman 600 0.30 Sophomore 540 0.27 Junior 460 Senior 400 0.20  

The bar graph shows the number of tickets sold each week by the garden club for their annual flower show.During which week was the fewest number of tickets sold?

Solve the problem.The average age of the students in a statistics class is 22 years. Does this statement describe descriptive or inferential statistics?

Solve the problem.A study was designed to investigate the effects of two variables — (1) a student’s level of mathematical anxiety and (2) teaching method — on a student’s achievement in a mathematics course. Students who had a low level of mathematical anxiety were taught using the traditional expository method. These students obtained a mean score of 370 with a standard deviation of 50 on a standardized test. Assuming a mound-shaped and symmetric distribution, in what range would approximately 95% of the students score?

Solve the problem.When Scholastic Achievement Test scores (SATs) are sent to test-takers, the percentiles associated with scores are also given. Suppose a test-taker scored at the 88th percentile on the verbal part of the test and at the 14th percentile on the quantitative part. Interpret these results.