Binomial Probability and Normal Distribution

What is the probability of tossing a coin 5 times and having it land tails-side-up 4 of the 5 times?

• 7.8 %

• 80 %

• 15.6 %

• 20 %

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

At a certain restaurant, there is a 70% probability that the flowers on your table will be yellow. If you are there with a group that is occupying 6 tables, what is the probability that 5 of the tables will have yellow flowers?

• 70%

• 70.6 %

• 30.3 %

• 5.0 %

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

Enter your answer in decimal form with three decimal places.

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

A biology test has 6 multiple choice questions. Each question has four choices and one correct answer. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct?

(Enter your answer in decimal form with three decimal places)

A company has developed an "easy start" mower that starts the motor with the push of a button. The company claims that the probability the mower will start on any push of the button is 0.95. Find the probability that the mower starts exactly 11 times out of 12 push starts.

• .01%

• 99.9%

• 54%

• 34.1%

Tags

CCSS.HSS.MD.A.3

CCSS.HSS.MD.A.4

When rolling a fair die 100 times, what is the probability of rolling a "4" exactly 15 times?

• 1.0%

• 10.0%

• 25%

• 2.1%

Tags

CCSS.HSS.MD.B.6

CCSS.HSS.MD.B.7

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

According to the empirical rule, what percentage of data falls within 1 standard deviation? 

• 25%
• 68%
• 95%
• 99.7%

Tags

CCSS.HSS.ID.A.4

According to the empirical rule, how much of the data falls within 3 standard deviations? 

• 25%
• 68%
• 95%
• 99.7%

Tags

CCSS.HSS.ID.A.4

In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. Approximately 95% of molds filled by this machine will hold weights in what interval? 

• 1084 to 1216 pounds 
• 1106 to 1150 pounds 
• 1106 to 1194 pounds 
• 1128 to 1172 pounds

Tags

CCSS.HSS.ID.A.4