Statistics Midterm Question Preview (ID: 53960)


Mean, Quartiles, Probability, Normal Distribution. TEACHERS: click here for quick copy question ID numbers.

Find the mean: 2, 2, 4, 6, 7, 9, 10, 11, 15
a) 7.3
b) 3.5
c) 9.7
d) 5.9

Find the quartiles: 2, 2, 4, 6, 7, 9, 10, 11, 15
a) Q1 = 2, Q2 = 7, Q3 = 11
b) Q1 = 3, Q2 = 6, Q3 = 10.5
c) Q1 = 3, Q2 = 7, Q3 = 10.5
d) Q1 = 3, Q2 = 7, Q3 = 11

In a bag of marbles, there are 3 red marbles, 5 blue marbles, and 1 yellow marble. What is the probability of choosing a blue marble?
a) 0.11
b) 0.56
c) 0.33
d) 0.78

Does choosing 3 sandwich toppings out of 7 options involve a combination or permutation?
a) combination
b) permutation
c) neither
d) don't choose this one

How many different ways can you choose 3 sandwich toppings out of 7 options?
a) 21
b) 3500
c) 210
d) 35

Let X = number of die rolls it takes to roll a 4. Is X a binomial variable?
a) yes
b) no
c) idk
d) what's a variable?

Let X = number of die rolls it takes to roll a 4. Is X a geometric variable?
a) yes
b) no
c) idk
d) geometric? I thought this was stats

A set of data with a mean of 17 and standard deviation of 5 is normally distributed. What two values do 99.7% of the data lie between?
a) 7-27
b) 12-22
c) 2-32
d) none

A set of data with a mean of 17 and standard deviation of 5 is normally distributed. Find the z-score for 30.
a) -3.4
b) -1.2
c) 0.8
d) 2.6

A set of data with a mean of 17 and standard deviation of 5 is normally distributed. Find the z-score for 11.
a) -3.4
b) -1.2
c) 0.8
d) 2.6

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