Answer:
a. P(x>20)=0.19
b. P(x≥6)=0.72
c. P(x≤20)=0.81
d. A and C
Step-by-step explanation:
We know that:
1) the probability that a student makes fewer than 6 mistakes is 0.28

2) The probaiblity that a student makes between 6 to 20 mistakes is 0.53.

We will express the proabilibities in function of the information we have.
a. Probability that a student makes more than 20 mistakes.

b. Probability that the student make 6 or more mistakes

c. Probability that a student makes 20 mistakes at most

d. A and C, because A takes a event of more than 20 mistakes and C takes the event of 20 or less mistakes. Both events cover a probability of 1.
Answer:
MQ=14
Step-by-step explanation:
The two triangles are similar
So the equation is
12/72=x/12
1/6=x/12
x=2
Answer:
700 Feet?
Step-by-step explanation:
A rectangle has 4 sides.
2 of them are 100 ft
2 of them are 250 ft.
2x100=200
2x250=500
500 ft +200 ft=700ft
In calculating
the average score, add the scores of each person and then divide it by the
number of scores present. In this problem, Tony has forty seven points for five
different quizzes. You are required to calculate for the average score of Tony.
The formula is A = T/n, where A is the average score, T is the score, and n is
the number of quizzes.
A = T/n
A = 47/5
<u>A = 9.4</u>
<span>
Therefore, Tony has an average of 9.4 points in five different
quizzes. </span>
Answer:
7, 8, 9, 10
Step-by-step explanation:
If Zoe worked 4 hours of babysitting at $7 per hour, she earned $28. Therefore, she must earn another $102 to earn at least $130. At $15 per hour, she must work a minimum of 7 hours clearing tables to make at least $102. This is fine since she can work another 10 hours before reaching her maximum of 14 total hours. Therefore, all possible values for the number of whole hours clearing tables that she must work to meet her requirements are 7, 8, 9, 10.