Question
In: Statistics and Probability
A random sample of computer users were asked which browser they primarily relied on for surfing...
A random sample of computer users were asked which browser they primarily relied on for surfing the Internet and whether this browser was installed on a desktop or laptop computer. The following contingency table shows these results.
|
Browser |
Desktop |
Laptop |
|---|---|---|
|
Internet Explorer |
18 |
56 |
|
Firefox |
7 |
37 |
|
Chrome |
24 |
77 |
|
Safari |
3 |
18 |
|
Other |
3 |
7 |
What is the probability that a randomly selected person from this sample used the Internet Explorer or the Chrome browser?
A.
0.585
B.
0.814
C.
0.651
D.
0.700
Solutions
Expert Solution
Definition
of probability, p= total no of favourable outcomes / total no of
outcomes. Here we need the probability that a randomly chosen
person uses either Internet explorer or chrome for browsing.
Therefore we took the total no of users who choose Internet
explorer + total no of users who choose chrome and divide the
quantity of total no of computer users surveyed. The answer we got
is 0.7 which is the option D.
orchestra answered 2 years agoRelated Solutions
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