Make a ratio, then cross multiply.
4/30=x/48
30x=4x48
30x=192
x=6.4
Answer and explanation:
Given : A driving exam consists of 29 multiple-choice questions. Each of the 29 answers is either right or wrong. Suppose the probability that a student makes fewer than 6 mistakes on the exam is 0.26 and that the probability that a student makes from 6 to 20 (inclusive) mistakes is 0.53.
Let X be the number of mistake
To find : The probability of each of the following outcomes.
a) A student makes more than 20 mistakes
i.e.
b. A student makes 6 or more mistakes
i.e.
c. A student makes at most 20 mistakes
i.e.
Using 'a' part
d. Which two of these three events are complementary?
The complement of an event happening is the exact opposite: the probability of it not happening.
According to definition,
Option a and c are complementary events.
The answer:
it would take 9 years for the account to grow to $12,700
the steps:
10,000 x .03 = 300
2,700 divided by 300 is 9
Is there something missing on the third option? None of the other options are wider
Scatter plots<span> are similar to line graphs in that they use horizontal and vertical axes to </span>plot<span> data points. However, they </span>have<span> a very specific purpose. </span>Scatter plots<span> show how much one variable is affected by another. The relationship between two variables is called their </span>correlation<span> .</span>