A company is testing their batteries in digital cameras to see if they last long enough to take 500 pictures. Each day they test 20 batteries and graph the overall percentage of the batteries that have failed the test so far.
Estimate the probability(as a %) that one of the company’s batteries will fail before taking 500 pictures with a digital camera.
Ignore the letter 'A' on the graph.
Required
4 points
4
Question 2
2.
A company is testing a newly developed coin to be used in the Super Bowl to determine which team gets to choose how they will start the game.
Estimate the probability (as a %) that a flip of the coin will give heads. __________
Required
4 points
4
Question 3
3.
What Statistical law is being illustrated in the previous 2 questions?
Required
10 points
10
Question 4
4.
At a high school, some students take Spanish, and some do not. Also, some
students take an arts subject, and some do not. Let S be the set of students who
take Spanish and A be the set of students who take an arts subject. On the Venn
diagrams given, shade the region representing the following instances:
Required
0 points
0
Question 5
5.
A gym runs 2 fitness classes: spin and circuits.
On Saturday, 100 people visited the gym.
18 people total attended spin class.
10 people attended both classes.
58 people did not attend either class.
Use the textbox tool in the 'show your work' area to create a representation of this information in a Venn Diagram and fill in the two way table:
Fill in what you know first, then figure out the missing numbers.
Required
1 point
1
Question 6
6.
Use #5:
What is the probability, as a fraction, that a randomly selected person attended only circuit class?
Required
1 point
1
Question 7
7.
What is the probability that a randomly selected person attended exactly 1 class?
Required
1 point
1
Question 8
8.
How many people enjoy all three sports?
Required
1 point
1
Question 9
9.
How many people enjoy football and hockey but not rugby?
Required
1 point
1
Question 10
10.
How many people enjoy football and rugby but not hockey?
Required
1 point
1
Question 11
11.
Which sport is enjoyed by the most number of people?
Required
1 point
1
Question 12
12.
Enter all answers for #17 - 24 as a fraction that is not simplified.
P(boy) =
Required
1 point
1
Question 13
13.
P(boy and does not play football) =
Required
1 point
1
Question 14
14.
P(plays football) =
Required
1 point
1
Question 15
15.
P(boy | play football) =
Required
1 point
1
Question 16
16.
P(girl | play football) =
Required
1 point
1
Question 17
17.
P(girl) =
Required
2 points
2
Question 18
18.
P(girl or does not play football) =
Required
1 point
1
Question 19
19.
P(girl | does not play football) =
Required
1 point
1
Question 20
20.
Determine if ordering a soda is independent of ordering food.
Find the probabilities below so you can compare the percents:
Enter your answer as a percent with one place past the decimal.
