On-Level IA #3 Corrections

A store manager receives a delivery of 2 boxes of lightbulbs. Each box contains 25 lightbulbs.

The store manager tests all the lightbulbs and finds that 2 of them are defective. Based on these results, what can the store manager predict about the next delivery of lightbulbs?

• A delivery of 3 boxes will contain 3 more defective lightbulbs than a delivery of 2 boxes.

• A delivery of 4 boxes will contain 2 more defective lightbulbs than a delivery of 2 boxes.

• A delivery of 5 boxes will contain 10 more defective lightbulbs than a delivery of 2 boxes.

• A delivery of 6 boxes will contain 3 more defective lightbulbs than a delivery of 2 boxes.

Mr. Brown planted a vegetable garden. The

circle graph shows the kinds of vegetables he planted and the percentage of the area of the garden each kind of vegetable occupied. Mr. Brown’s garden has an area of 160 square feet. How many square feet of Mr. Brown’s garden is occupied by cabbage?

• 136 ft^2

• 24 ft^2

• 15 ft^2

• 145 ft^2

The dot plot below shows the ages of children taking swimming lessons at the community center. What percentage of children are 5 years old or younger?

• 11%

• 20%

• 35%

• 55%

Felix has a bucket of golf balls. The table shows the number of golf balls of each color in the

bucket. Felix selects a golf ball at random. Based on the information in the table, which statement is true?

• The golf ball is more likely to be green than all other colors combined.

• The golf ball is equally likely to be pink, white, orange, or green.

• The golf ball is 2 times as likely to be orange as it is to be pink.

• The golf ball is 7 times as likely to be green as it is to be white

The box plots show data about the number of years that farmworkers have been employed at

each of two farms. Which statement is best supported by the information in the box plots?

• The range of the data for Farm Y is equal to the range of the data for Farm X.

• The third quartile of the data for Farm Y is less than the third quartile of the data for Farm X.

• The median of the data for Farm Y is greater than the median of the data for Farm X.

• The first quartile of the data for Farm Y is greater than the first quartile of the data for Farm

  X.

A number cube with faces labeled from 1 to

6 was rolled 20 times. Each time the number cube was rolled, the number showing on the top face was recorded. The table shows the results. Based on these results, what is the experimental probability that the next time the number cube is rolled it will land with 5 or 6 showing on the top face?

• 2/5

• 3/20

• 1/3

• 3/5

A number cube is rolled twice. What are

the chances that the number cube will land on 3 both times?

• 1/36

• 1/12

• 1/4

• 1/3

See picture for question.

• x $\le$ -5

• x $\le$ 5

• x $\le$ 1

• x $\le$ -14

The number of pets per household for Mrs. Anderson’s class and Mrs. Murphy’s class are shown in

the dot plots. Here are three statements about the number of pets per household for these two classes.

I. The range of the number of pets per household for Mrs. Murphy’s class is greater than the range of the number of pets per household for Mrs. Anderson’s class.

II. The distribution of the data is approximately symmetrical in both sets of data.

III. The mode of the number of pets per household for Mrs. Anderson’s class is equal to the mode of the number of pets per household for Mrs. Murphy’s class.

Which of these three statements appear to be true?

• I only

• I and III

• II and III

• III only

What is the value of x in this equation?  $5-\ 3x\ =\ -7$  

• x = 4

• x = -4

• x = 2

• x = 12