Fall Semester Review

I conduct a survey by asking every third person who enters Publix what they think. This method is:

• Random

• Convenience

• Systematic

• Stratified

Tags

CCSS.HSS.IC.B.3

Ms. Jeffries samples her class by selecting all students sitting at group 1 and group 5 in her classroom. This sampling technique is called?

• Simple

• Stratified

• Systematic

• Cluster

For a set of data, where Q₁ = $30, Q₂ = $55, and Q₃ = $80.  Calculate the interquartile range.

• $15
• $50
• $55
• $25

Tags

CCSS.6.SP.B.5C

What is the MODE of this data?

• 100
• 20
• 80, 85, and 90
• none

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What percent of students have heights between 60 inches and 66 inches?

• 75%
• 50%
• 100%
• 25%

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Is this binomial experiment? Shuffle a deck of 52 cards. Turn over the top card. Put the card back in the deck, shuffle again. Repeat the process 10 times. Let X = the number of aces you observe.

• Yes
• No, the trials are not independent.
• No, there are more than 2 outcomes

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

Which of the following is NOT an assumption of the Binomial distribution?

• All trials must be independent.
• Each trial must be classified as a success or a failure.
• All trials are dependent on each other.
• The number of successes in the trials is counted.

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

60% of the commercials aired on a network from 8 PM to 10 PM are 15 seconds long, 20% are 30 seconds long, and the rest are 60 seconds.  What is the expected length of a commercial?

• 25 seconds
• 26 seconds
• 27 seconds
• 28 seconds

Tags

CCSS.HSS.MD.A.2

Decide whether a binomial model applies and explain why or why not.   Counting the number of Democrats, Republicans, and Independents in the school faculty

• Yes, a binomial model applies
• No, there are more than two outcomes.

Decide whether a binomial model applies and explain why or why not.   Counting the number of red gummy bears you get as you take them one at a time from a small bag.

• Yes, a binomial model applies
• No, there are more than two outcomes.
• No, the trials are not independent, the probability of success changes after each trial.