Answer:
7
Step-by-step explanation:
15-8=7 this is how you answer it
No, Lily is not correct. This is because 16+3 does not equal 18. So to find N, you take 18 and subtract 16.
18-16=n
18-16=2
so n=2
16+2=18.
Answer:
<u>4 Objects can fit in the box</u>
Step-by-step explanation:
First, translate the box's 1-foot side into 12 inches. Now multiply all the box's sides together to get 12*3*4. This will equal 144 cubic inches. Now divide 144 by 36 to get 4.
Answer:

Step-by-step explanation:
Answer:
The probability that the student answers at least seventeen questions correctly is
.
Step-by-step explanation:
Let the random variable <em>X</em> represent the number of correctly answered questions.
It is provided all the questions have five options with only one correct option.
Then the probability of selecting the correct option is,

There are <em>n</em> = 20 question in the exam.
It is also provided that a student taking the examination answers each of the questions with an independent random guess.
Then the random variable can be modeled by the Binomial distribution with parameters <em>n</em> = 20 and <em>p</em> = 0.20.
The probability mass function of <em>X</em> is:

Compute the probability that the student answers at least seventeen questions correctly as follows:


Thus, the probability that the student answers at least seventeen questions correctly is
.