Answer:
Step-by-step explanation:
Number 1 FALSE
9 * 9 * 3 = 81 * 3 = 243
Number 2 TRUE
7 + 7 + 7 = 3 + 3 + 3 + 3 + 3 + 3 + 3
7 * 3 = 3 * 7
21 = 21
Number 3 FALSE
17 * 17 * 17 = 4913
Number 4 FALSE
4 * 1 = 4
Number 5 FALSE
6 + 6 + 6 = 18
Answer:
0.99379
Step-by-step explanation:
The first thing to do here is to calculate the z-score
mathematically;
z-score = x-mean/SD/√(n)
From the question x = 9.5 ,
mean = 9, SD = 2 and n = 100
Plugging the values we have;
z-score = (9.5-9)/2/√(100) = 0.5/2/10 = 0.5/0.2 = 2.5
So the probability we want to calculate is;
P(z<2.5)
We use the standard table for this
and that equals 0.99379
Answer:
30°, 67° & 83°. So, the first angle is (2,67 + 16)/5 = 30°, the second is 67° and the third is 83°.
Hope this answer is right!!
Answer:
A, B and E could not be probabilities
Step-by-step explanation:
By definition, <u>a probability could be any number between 0 and 1. </u>So a probability P would be 0≤P≤1. In percentages, 0% ≤ P ≤ 100%
Considering this we would have that:
A) 110% could not be a probability because it's larger than 100%
B) 5.42 could not be a probability because it's larger than 1.
C) 0.001 could be a probability because it's larger than 0 and smaller than 1 (It doesn't matter how small it is)
D) 0.58 could be a probability because it's between 0 and 1.
E) -120% could not be a probability because it's smaller than zero. (it's a negative number)
Thus, A), B) and E) could not be probabilities.
