Estimating Parameters and Determining Sample Sizes Quiz 7-4

What is the focus of section 7-4?

• Estimating a Population Proportion

• Estimating a Population Mean

• Estimating a Population Standard Deviation or Variance

• Bootstrapping: Using Technology for Estimates

What is necessary to estimate a population proportion?

• Sample size

• Sample mean

• Population variance

• Standard deviation

In statistics, what does a point estimate aim to provide?

• A range of possible values

• A single best guess

• A hypothesis test result

• A correlation coefficient

What is the most consistent estimator that could be used for $ p $?

• q^​=1−p^​

• p^​

• r^

• s^

What percentage of surveyed students said they take online courses?

• 53%

• 45%

• 60%

• 50%

What type of students were surveyed in the document?

• Undergraduate college students

• High school students

• Graduate students

• Middle school students

What is the purpose of finding the best point estimate in the document?

• To determine the proportion of all undergraduate college students who take online courses

• To find the average grade of students

• To assess the effectiveness of online courses

• To evaluate student satisfaction

What is the significance of using a cumulative left area of 0.9750 instead of 0.95?

• It increases the confidence level

• It decreases the confidence level

• It has no effect on the confidence level

• It is used for a different statistical test

At a school, a random sample of 35 students in a physical education class took a survey about their favorite activity. ​There are 275 total students. Based on the results of the survey, what is the most reasonable estimate for the number of students who prefer pin dodgeball?

• 55

• 240

• 28

• 42

A summer camp surveys 40 campers to see if they would take tennis lessons next week. Twelve campers say they would. There are 250 campers. Estimate the number of campers the counselors should plan on taking tennis lessons next week.

• 60

• 65

• 75