MAT 152 Final review

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• f(x) = 25.05x + 5.57
• f(x) = 5.57x + 25.05
• f(x) = -5.57x + 25.05
• f(x) = 5.57x - 25.05

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)

• 2/9
• 1/3
• 1/2
• 1/4

If you were to flip a coin 20 times, what is the probability you would get exactly 10 heads?

• 50%
• 17.62%
• .58.81%
• 41.19%

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

The scoring of modern IQ is such that Intelligence Quotients (IQs) have a normal distribution of μ= 100 and 𝞂 = 15.

Mensa International is a non-profit organization that accepts only people with IQ score within the top 2%. What level of IQ qualifies one to be a member of Mensa?

• 115
• 130.75
• 145
• 120

Tags

CCSS.HSS.ID.A.4

The mean time for a group of runners on the 200 meter dash was 27 seconds with a standard deviation of 1.2.  What percent of runners had a time that was less than 25.8 seconds?

• 47.5%
• 16%
• 68%
• 83.85%

Tags

CCSS.HSS.ID.A.4

Find the area under the normal distribution curve between a z=-1.26 and z=.57. 

• 0.0047
• 0.9204
• 0.6119
• 0.4981

Tags

CCSS.HSS.ID.A.4

Find the outlier in the set of data:
4, 11.6, 50, 23, 20.1, 19, 29, 12.7, 8, 23, 57.5

• 57.5
• 50, 57.5
• 4, 50, 57.5

30% of all dogs in a city are micro-chipped. In a sample of 50 dogs, what is the probability that less than 12 dogs are micro-chipped? 

• 0.237
• 0.189
• 0.177
• 0.126

Tags

CCSS.HSS.ID.A.4

A random sample of 100 visitors to a popular theme park spent an average of $142 on the trip with a standard deviation of $47.5. Which of the following would be the 98% confidence interval for the mean money spent by all visitors to this theme park?

• ($130.77, $153.23)
• ($132.77, $151.43)
• ($132.69, $151.31)
• ($140.88, $143.12)

Tags

CCSS.HSS.IC.B.4

A person travels by car.  They record their miles driven in a data table.  Calculate the linear regression equation of this data.

• y = 61.93x - 1.79
• y = -1.79x + 61.93
• y = 0.016x + 0.03
• y = 0.03x + 0.016