Prob Stat Chapter 4

The line of best fit for a data set is y=6.5x+70 where x = amount of time studying and y = test score. How long did you study if you scored a 90?

• 1 hour

• 2 hours

• 3 hours

• 4 hours

Tags

CCSS.HSF.LE.B.5

How many total people were surveyed?

• 105

• 55

• 160

• 125

The line of best fit for a data set is y=6.5x+70 where x = amount of time studying and y = test score. What is your score if you didn't study at all?

• 6.5

• 70

• 76.5

• 63.5

Tags

CCSS.HSF.LE.B.5

Describe the graph.

• Strong, positive association

• Strong, negative association

• No association

• Weak, positive associaiton

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/9 or 1/3

• 1/9

• 3/6

The outcome table below shows the possible results of rolling a dice and flipping a coin.  Determine the probability of getting a head OR an even number in simplified form.

• 9/12

• 3/4

• 1/2

• 1/3

What is the probability that a female is chose given they like a Toyota? 

• .525

• .4627

• .6774

• .3143

The number of hours a group of contestants spent preparing for a quiz show are listed below. What is a frequency table that represents the data?
60 25 86 56 45 48 90 75 30 67 90 36 80 15 32 65 61

• Hours  Frequency
  0-9  0
  10-19  1
  20-29  1
  30-39  3
  40-49  2
  50-59  1
  60-69  4
  70-79  1
  80-89  2
  90-99  2

• Hours  Frequency
  0-9  0
  10-19  1
  20-29  2
  30-39  1
  40-49  2
  50-59  1
  60-69  4
  70-79  1
  80-89  1
  90-99  1

• Hours  Frequency
  0-9  4
  10-19  1
  20-29  1
  30-39  2
  40-49  3
  50-59  4
  60-69  1
  70-79  1
  80-89  1
  90-99  1

• Hours  Frequency
  0-9  1
  10-19  2
  20-29  1
  30-39  2
  40-49  2
  50-59  3
  60-69  3
  70-79  1
  80-89  0
  90-99  2

Describe the histogram:

• Left Skewed

• Symmetrical

• Right Skewed

• Uniform

What is the MEDIAN of this data?

• 95

• 90

• 100

• 40