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154_S&P_Aishwariya

Authored by Aishwariya Hariharan

Mathematics

9th - 12th Grade

154_S&P_Aishwariya
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35 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Given the probability model in the table below, what is the expected value of the random variable?
  X        50          20        5
P(X)     0.1         0.3      0.6

14
4.67
5
7.5

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

A marketing survey compiled data on the number of cars in households.  If X = the number of cars in a randomly selected household, and we omit the rare cases of more than 5 cars, then X has the following probability distribution: 
X           0          1          2          3           4           5    
P(X)   0.24    0.37    0.20    0.11    0.05     0.03
What is the probability that a randomly chosen household has at least two cars?

0.20
0.29
0.39
0.61

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What type of probability is a way of estimating the probability of an event happening based on repeated trials?

Experimental Probabillity

Theoretical Probability

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Kate spun the spinner 75 times and landed on "3" thirty times.

What is the experimental probability as a percentage?

20%

30%

40%

50%

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Jill rolled a "5" fifteen times out of 20 rolls on a dice.

What is the experimental probability as a SIMPLIFIED FRACTION!

3/7

3/6

3/5

3/4

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Shannon has a bag of jelly beans.

5 Green

2 Red

3 Blue

What is the experimental probability of her selecting a red jelly bean?

11/33

2/10

1/5

23/30

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Determine the type of probability:

Damon flipped a coin 50 times and got 31 heads.

Based on the results, the probability of heads is 31/50, or 62%.

Theoretical Probability

Experimental Probability

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