Probability Quiz on Lessons 7-1 thru 7-3

The local weather station reports that the chance of sleet is 0.99. Write this probability as a fraction and as a percent.

• $\frac{99}{100}$ and 99%

• $\frac{1}{100}$ and 1%

• $\frac{1}{50}$ and 1%

• $\frac{99}{50}$ and 99%

Rose has a 79% chance of getting a black sticker our of a certain machine. Write this probability as a fraction and as a decimal.

• $\frac{21}{100}$ and 0.21

• $\frac{21}{50}$ and 0.21

• $\frac{79}{50}$ and 0.79

• $\frac{79}{100}$ and 0.79

The chance that Rachel will win a prize is

 $\frac{21}{50}$  .  Write this probability as a decimal and as a percent.

• 0.42 and 42%

• 0.42 and 2.38%

• 0.58 and 42%

• 0.58 and 58%

A letter is chosen at random from the 26 letters in the alphabet.  (Vowels are A, E, I, O and U.)  What is the probability of choosing a vowel?

• $\frac{21}{26}$

• $\frac{26}{5}$

• $\frac{5}{21}$

• $\frac{5}{26}$

Tags

CCSS.7.SP.C.7B

What is the probability of rolling a number greater than 4 on a fair die?  (Be sure your answer is in simplest form.)

• $\frac{1}{3}$

• $\frac{1}{6}$

• $\frac{1}{2}$

• $\frac{5}{6}$

Tags

CCSS.7.SP.C.7B

What is the probability of rolling a number less than or equal to 5 on a die?  (Be sure your answer is in simplest form.)

• $\frac{5}{6}$

• $\frac{2}{3}$

• $\frac{1}{3}$

• $\frac{1}{6}$

Tags

CCSS.7.SP.C.7B

Paige flipped a coin 40 times. She rolled heads 22 times and tails 18 times. What is the experimental probability of rolling heads? (Be sure your answer is in simplest form.)

• $\frac{22}{40}$

• $\frac{11}{40}$
  

• $\frac{11}{20}$
  

• $\frac{18}{40}$
  

Tags

CCSS.7.SP.C.6

Paige flipped a coin 40 times. She rolled heads 22 times and tails 18 times. What is the theoretical probability of rolling tails? (Be sure your answer is in simplest form.)

•  $\frac{18}{40}$  
  

•  $\frac{9}{20}$  
  

•  $\frac{11}{20}$  
  

•  $\frac{1}{2}$  
  

Greg spins the spinner 18 times. The spinner lands on the letter A 5 times, the letter B 8 times, and the letter C 5 times.

What is the theoretical probability that the spinner will land on the letter A?

• $\frac{1}{3}$

• $\frac{4}{9}$

• $\frac{5}{18}$

• $\frac{1}{18}$

Greg spins the spinner 18 times. The spinner lands on the letter A 5 times, the letter B 8 times, and the letter C 5 times.

What is the experimental probability that the spinner will land on the letter A?

• $\frac{1}{3}$

• $\frac{4}{9}$

• $\frac{5}{18}$

• $\frac{1}{18}$

Tags

CCSS.7.SP.C.6