A museum surveyed three groups of 5 members to find out how many times the members visited the zoo in the past year. The table shows the results of the three samples.

Survey Visits to the Museum

Group 1 {4, 10, 6, 3, 8}

Group 2 {3, 1, 2, 1, 2}

Group 3 {7, 9, 3, 4, 7}

Identify any surveys that are likely biased. Based on the unbiased surveys, estimate the mean number of visits per member in the past year.

Enter your answer in the box. Round to the nearest whole number.

Question

Mathematics

Hardy

30 November, 11:00

A museum surveyed three groups of 5 members to find out how many times the members visited the zoo in the past year. The table shows the results of the three samples.

Survey Visits to the Museum

Group 1 {4, 10, 6, 3, 8}

Group 2 {3, 1, 2, 1, 2}

Group 3 {7, 9, 3, 4, 7}

Identify any surveys that are likely biased. Based on the unbiased surveys, estimate the mean number of visits per member in the past year.

Enter your answer in the box. Round to the nearest whole number.

+3

Answers (1)

Know the Answer?

John Gonzales · Answer 1

I would go with group 2 as the unbiased one, as its not normal to visit a Zoo/Museum (You wrote both) 10 times a year.

After you got what you need, you can do this:

(3+1+2+1+2) / 5=1.8

Since you should round it, and its above 1.5, the proper answer is 2.