7th Grade--Chapter 10-- Probability & Statistics

Question 1

A jar has 10 jolly ranchers, only two of which are blue. What is the prob you get BOTH blues?

Accepted Answer

2/90

Question 2

A password must have 2 letters and 3 numbers. How many passwords are possible?

Accepted Answer

676,000

Question 3

A jar has 8 candies (four of which are blue). What is the prob you pull TWO blues?

Accepted Answer

3/14

Question 4

Gr A was kids at a soccer game. Gr B was kids in a hallway. Which is more reliable?

Accepted Answer

Group B

Question 5

What measures of variation can you find using the box and whisker plot?

Accepted Answer

range & IQR

Question 6

There is a 12% chance of winning a prize. If 500 people try to win, how many should win?

Accepted Answer

60

Question 7

There are 800 kids in school. Use Group A to predict how many kids like soccer.

Accepted Answer

727

Question 8

There is a 3% chance of winning a prize. If 70 people try to win, how many should win?

Accepted Answer

2

Question 9

Find the range for Class #1

Accepted Answer

37

Question 10

Find the IQR for Class #1

Accepted Answer

18

Question 11

A combination lock has 3 numbers (each from 0 through 59). How many combinations are there?

Accepted Answer

216,000

Question 12

A bag has the letters I L O V E M A T H. Find prob of drawing 2 vowels (without replacement)

Accepted Answer

12/72

Question 13

Find the median for Class #1

Accepted Answer

80

Question 14

What measures of central tendency can you find using the box and whisker plot?

Accepted Answer

only median

Question 15

There are 800 kids in school. Use Group B to predict how many kids like soccer.

Accepted Answer

229

Question 16

What is the probability of spinning a prime & flipping a tails?

Accepted Answer

1/4

Question 17

A bag has the letters I L O V E M A T H. Find the prob of drawing 2 vowels (with replacement)

Accepted Answer

16/81

Question 18

What is the probability of spinning a number bigger than 6 twice in a row?

Accepted Answer

1/16

Questions 18