Math 11 Midterm 1

A woman’s DNA matches that of a sample found at a crime scene. If the woman is guilty the chances of a DNA match is virtually 100% (i.e. the chance of a false negative is essentially zero). Can we say that given a DNA match, the woman must be guilty?

• Yes

• No

A woman’s DNA matches that of a sample found at a crime scene. There is 70% chance she committed the crime. A DNA test has a false positive rate of 40%. What is the probability she is guilty?

• 0.4

• 0.7

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

Based on this plot, can we conclude that having a bachelor's

degree increases one's income?

• Yes

• No

Tags

CCSS.HSS.ID.C.9

You flip a coin 12 times with an 80% probability of heads. What is the probability of at least one tails in the 12 flips?

Which of the grade distributions is not a valid probability distribution?

• (d) , (f)

• (c),(d), (f)

• (a), (c), (d),(f)

• (a), (c), (d), (e), (f)

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

Which boxplot best matches histogram (a)?

• 1

• 2

• 3

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Which plot depicts a high leverage point that is not influential?

• a

• b

• c

Tags

CCSS.8.SP.A.1

Do you expect the mean to be greater or less than the median based on this histogram?

• Greater

• Less than

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Match the correlations and the plots

• 1. R = 0.92

  2. R = 0.45

  3. R = 0.06

  4. R = -0.7

• 1. R = 0.06

  2. R = 0.92

  3. R = 0.45

  4. R = -0.7

• 1. R = -0.07

  2. R = 0.92

  3. R = 0.06

  4. R = 0.46

• 1. R = 0.06

  2. R = 0.45

  3. R = 0.92

  4. R = -0.7

Tags

CCSS.HSS.ID.C.8

Suppose you want to estimate the percentage of videos on YouTube that are cat

videos. It is impossible for you to watch all videos on YouTube so you use a random video picker to select

1000 videos for you. You find that 2% of these videos are cat videos. Determine which of the following is a sample statistic?

• Percentage of all videos on YouTube that are cat videos.

• 2%

• A video in your sample

• Whether or not a video is a cat video