Answer:
And we can use the probability mass function and we got:
Then the probability that all three have a smart phone is 0.091
Step-by-step explanation:
Let X the random variable of interest "number of students with smartphone", on this case we now that:
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
And we want to find this probability:
And we can use the probability mass function and we got:
Then the probability that all three have a smart phone is 0.091
Answer:
-4/3
Step-by-step explanation:
The second with the mistake is that
-4 minus 2 would be -6
The answer is at the bottom.
3 times 4/5 = 3/1 times 4/5
so you get 12/5
the question says as the product of a whole number and unit fraction
so it is 2 2/5.
the answer is 2 2/5
Answer:
Hi there!
To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem.
Apothem: a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side.
Answer:
y = 0.15(210) + 3.75
Step-by-step explanation:
if it costs $0.15 per message. x would be the value of 210
