# pre algebra part 2 – Studypool

I don’t understand this Algebra question and need help to study.

## Question 1 (5 points)

For each situation, make a tree diagram or table to show the sample space. Then give the total number of outcomes.

picking a number from 1 to 4 and choosing the color red, green, or yellow

Question 1 options:
 6 9 12 24

## Question 2 (5 points)

List all of the possible outcomes using the table below.

 Skirt Color skirt 1 white skirt 2 black

Question 2 options:
 skirt 1, whiteskirt 2, blackskirt 2, whiteskirt 2, black skirt 1, whiteskirt 1, blackskirt 2, whiteskirt 2, black skirt 1, whiteskirt 1, blackskirt 2, whiteskirt 2, white skirt 1, whiteskirt 1, blackskirt 1, whiteskirt 2, black

## Question 3 (5 points)

Find the mode of each set of data.

33, 19, 15, 39, 39, 34, 24, 29

Question 3 options:
 31 29 32 39

## Question 4 (5 points)

Find the interquartile range of the data.

68, 82, 44, 79, 94, 60, 78, 70, 59

Question 4 options:
 70 20 50 21

## Question 5 (5 points)

Winona’s bowling scores for the past nine weeks are 195, 180, 195, 212, 208, 231, 179, 246, and 195. Find the mean, median, and mode. Round to the nearest tenth, if necessary.

Question 5 options:
 204, 195, 195 204.6, 195, 195 204.6, 208, 195 205, 195, no mode

## Question 6 (5 points)

The frequency table shows Sam’s record in swimming.

 Year Number of medals 2008 6 2009 4 2010 1 2012 7 2013 4

Based on this record, what is the probability of picking up a medal won by him in the years 2009 or 2012.

Question 6 options:
 2

## Question 7 (5 points)

The table shows the price of admission at eight theaters.

 Theater Admission Prices (\$) 5.00 7.50 8.25 8.00 9.75 10.25 11.00 10.75

Find the mean absolute deviation of admission prices. Round to the nearest hundredth if necessary.

Question 7 options:
 \$13.00 \$8.81 \$6.00 \$1.63

## Question 8 (5 points)

Identify the sample as biased or unbiased and describe its type.

John wanted to know about the popularity of a particular movie. He surveyed 20% of the people in 5 different theaters.

Question 8 options:
 biased, voluntary response sample biased, convenience sample unbiased, simple random sample unbiased, systematic random sample

## Question 9 (5 points)

The table shows the high temperatures for two different cities over the past 10 days.

 High Temperatures (°F) Lewistown 64 65 65 66 68 69 70 71 73 74 Hamersville 55 63 65 67 67 68 68 68 70 71

Compare the ranges in temperature for the cities.

Question 9 options:
 The range for Lewistown is 6 more than the range for Hamersville. The range for Lewistown is 3 more than the range for Hamersville. The range for Hamersville is 5 more than the range for Lewistown. The range for Hamersville is 6 more than the range for Lewistown.

## Question 10 (5 points)

Nina’s quiz scores for the quarter are 90, 79, 5, 84, 95, 81, 87, and 94. Which measure of central tendency best represents the data shown in the table and why?

Question 10 options:
 Since the data have many repeated values, the mode best represents the data. Since there is an extreme value (5) and there are no big gaps in the middle of the data, the median best represents the data. Since there are no extreme values, the mean best represents the data. Since there are no extreme values and few repeated numbers, the median best represents the data.

## Question 11 (5 points)

Lionel is apartment hunting. He makes a table of prospective apartment choices.

 Apartment Rental Prices Apartment Choice Price per Month (\$) 1 630 2 755 3 675 4 765 5 690 6 680 7 675

Which measure of central tendency best represents the data shown in the table and why?

Question 11 options:
 Since the data is grouped close together, the mode best represents the data. Since there are no extreme values, the median best represents the data. Since there are no extreme values and few repeated numbers, the mean best represents the data. Since the value 675 occurs more than once, the mode best represents the data.

## Question 12 (5 points)

 How Often We Check Email

According to the graph, out of 2500 people, how many would you expect check email daily?

Question 12 options:
 575 people 1900 people 190 people 25 people

## Question 13 (5 points)

Identify the sample as biased or unbiased and describe its type.

To determine whether students would choose engineering as their profession, equal number of boys and girls were surveyed in a school.

Question 13 options:
 unbiased, stratified random sample unbiased, systematic random sample biased, convenience sample biased, voluntary response sample

## Question 14 (5 points)

The table shows the number of points scored by each team in a tournament.

 Number of Points Scored 12 25 16 20 31 16 19 22

Find the mean absolute deviation of the number of points scored. Round to the nearest hundredth if necessary.

Question 14 options:
 4.41 16 20.13 35.26

## Question 15 (5 points)

Find the probability.

A bag of sweets contains 20 gummy bears and 35 orange slices. One sweet is taken at random from the bag. Find
P(gummy bear).

Question 15 options:

## Question 16 (5 points)

Find the range for the set of data.

101, 72, 115, 114, 117, 56, 101, 68, 111, 58, 51, 51, 90

Question 16 options:
 64 85 66 90

## Question 17 (5 points)

Find the probability.

A marble is randomly selected from a bag containing 15 black, 12 white, and 6 clear marbles. Find
P(not clear). Round to the nearest percent if necessary.

Question 17 options:
 18% 82% 64% 55%

## Question 18 (5 points)

Find the median, first quartile, third quartile, interquartile range, and any outliers for each set of data.

111, 68, 93, 88, 74, 152, 119, 87, 88, 105, 84, 102, 151, 115, 112

Question 18 options:
 median: 102, Q1: 87, Q3: 113, IR: 28, outliers: none median: 102, Q1: 87, Q3: 115, IR: 28, outliers: 68 median: 102, Q1: 87, Q2: 115, IR: 28, outliers: none median: 102, Q1: 87, Q3: 115, IR: 27, outliers: none

## Question 19 (5 points)

For the following exercises, use the chart below. It shows the percent of consumers who prefer each brand of paper towel.

 Paper Towel Number of Responses Thirsty 49 Clean 24 Strong Ones 15 PowerWash 12

Predict how many consumers prefer PowerWash paper towels from a group of 195?

Question 19 options:
 23 consumers 24 consumers 29 consumers 30 consumers

## Question 20 (5 points)

Find the median, first quartile, third quartile, interquartile range, and any outliers for each set of data.

14.6, 28.1, 3.9, 7.1, 5.3, 30.9, 2.8, 6.5, 20.8, 16.4, 16.4, 27.1, 53.5, 12.5, 6.1

Question 20 options:
 median: 14.6, Q1: 6.1, Q3: 27.1, IR: 21, outliers: none median: 14.6, Q1: 6.1, Q3: 27.1, IR: 20, outliers: none median: 14.6, Q1: 6.1, Q3: 27.1, IR: 21, outliers: 2.8 median: 14.6, Q1: 6.1, Q3: 25.1, IR: 21, outliers: none