Answer:
-0.64
Step-by-step explanation:
Given:
4[2/5(-2.5)]
Find:
Value
Computation:
⇒ 4[2/5(-2.5)]
⇒ 8 / [-12.5]
⇒ -0.64
Suppose the student guesses the answers, we shall consider this a binomial probability problem of success. This implies that getting a question right is p=1/5.
The number of questions is n=20 questions.
The mean of binomial distribution is
mean=n*p= 20*1/5=4
b] The standard deviation of a binomial distribution is given by:
σ=√(n*p*(1-p))
=√(20*0.2*0.8)
=1.79~1.8
Answer:
μ=4 ; σ=1.8
The student's score was higher than 54% of the students who took the test. Then the correct option is C.
<h3>What is the percentage?</h3>
The quantity of anything is stated as though it were a fraction of a hundred.
A student scored in the 54th percentile on her Calculus exam.
Then the student's score mean in relation to those of the other test takers will be
Let the student got the lowest scored in calculus.
Then the student's score was higher than 54% of the students who took the test.
Then the correct option is C.
More about the percentage link is given below.
brainly.com/question/8011401
#SPJ1
Answer:
A) (3,6)
Step-by-step explanation:
Let M be the midpoint of the line segment at (1,7) and (5,5). Then:
Answer:
B
Step-by-step explanation:
Charla uses 2 cups of mix per 6 cups of water.
2/6 = 1/3
Rae uses 3 cups of mix per 7 cups of water.
3/7
To compare these fractions, we need to find the common denominator. In this case, it's 21.
1/3 = 7/21
3/7 = 9/21
9/21 is greater than 7/21, so Rae's lemonade will taste stronger.
