Probability and Two-Way Tables

Question 1

Information about a shipment of mirrors to a local store is shown.

Revolt · Accepted Answer

68

Question 2

Which statements are true? Select three options.

Revolt · Accepted Answer

Milk was requested for 16 of the large-sized meal orders.; Sixty-three of the orders of soda came with a regular-sized meal.; A total of 124 large-sized meals were ordered.

Question 3

Mr. Carandang sold a total of 1,790 prints of one of his drawings. Out of all 1,273 unframed prints that he sold, 152 were small and 544 were medium-sized. Out of all of the framed prints that he sold, 23 were small and 42 were extra large. Of the large prints that he sold, 188 were framed and 496 were unframed. SmallMediumLargeExtra LargeTotalFramed 23 264 188 42 ?Unframed 152 544 496 81 1,273Total 175 808 684 123 1,790

Revolt · Accepted Answer

517

Question 4

The two-way table shows the estimated number of students who will enroll in three area high schools next year.

Revolt · Accepted Answer

0.4

Question 5

A survey was taken of children between the ages of 7 and 12. Let A be the event that the person rides the bus to school, and let B be the event that the person has 3 or more siblings.Which statement is true about whether A and B are independent events?

Revolt · Accepted Answer

A and B are not independent events because P(A∣B) = 0.375 and P(A) = 0.25.

Question 6

Find P(Y|B) from the information in the table.

Revolt · Accepted Answer

0.4

Question 7

The two-way table shows the preferred vacation destination for people in different age groups.Which statement is true?

Revolt · Accepted Answer

The probability that a randomly selected person who chose Mexico as the preferred destination is a child is .

Question 8

A 5-column table has 4 rows. The first column has entries A, B, C, Total. The second column is labeled X with entries 45, 20, 25, 90. The third column is labeled Y with entries 30, 10, 35, 75. The fourth column is labeled Z with entries 60, 25, 50, 135. The fifth column is labeled Total with entries 135, 55 110, 300.

Revolt · Accepted Answer

C and Y are not independent events because P(C∣Y) ≠ P(C).

Question 9

Information about the students at Jackson High School is shown in the table.

Revolt · Accepted Answer

Out of the 352 eleventh graders at the school, 173 of them are girls.

Question 10

A 5-column table has 4 rows. The first column has entries A, B, C, Total. The second column is labeled X with entries 15, 5, 30, 50. The third column is labeled Y with entries 5, 8, 15, 28. The fourth column is labeled Z with entries 10, 7, 5, 22. The fifth column is labeled Total with entries 30, 20, 50, 100.

Revolt · Accepted Answer

A and X

Probability and Two-Way Tables Answers

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