Statistics-Practice Test on Hypothesis and Test Statistic

Oliver believes that he is a 6-footer. His actual height is 156 cm.

• Type I Error

• Type II Error

Your motivation affects your participation in class.

• two-tailed test
• one-tailed, right-tailed test
• one-tailed, left-tailed test

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the parameter?

• population mean
• population variance
• sample mean
• sample standard deviation

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

Describe the parameter.

• average number of books read by grade 8 students in a month
• average number of books read by grade 8 students in a month is 10
• average number of books read by grade 8 students in a month is 12

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the level of significance?

• 0.1
• 0.05
• 0.5
• 0.01

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the null hypothesis?

• The average number of books read by grade 8 students is 10.
• The average number of books read by grade 8 students is 12.
• The average number of books read by grade 8 students is greater than 10.
• The average number of books read by grade 8 students is greater than 12.

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the null hypothesis in symbols?

• 
• 
• 
• 

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the alternative hypothesis?

• The average number of books read by grade 8 students is not 10.
• The average number of books read by grade 8 students is not equal to 12.
• The average number of books read by grade 8 students is greater than 10.
• The average number of books read by grade 8 students is greater than 12.

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What is the alternative hypothesis in symbols?

• 
• 
• 
• 

A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of 35 grade 8 students read an average of 12 books a month and a standard deviation of 1 book. Test the claim at 95% confidence level.

What type of test should be used?

• one-tailed, right-tailed test
• one-tailed, left-tailed test
• two-tailed test