Solution :
Given :
P (never married) = P = 0.44
Sample size, n = 15
Let (n = 15, P = 0.44)
P(X = x) =
a). The probability that exactly two of them have been married is
P(X=2) =
= 0.0108
b). That at most two of them have never been married.
= 0.000167+0.001969+0.010828
= 0.012964
= 0.0130
c). That at least 13 of them have been married.
P(married) = 1 - P(never married)
= 1 - 0.44
= 0.56
= 0.012964
=0.0130
The unknown factor is 20, 4X20=80.
Answer:
There's multiple answers
Step-by-step explanation:
The value of a mixed fraction can be found multiple ways. it can be found on a pie chart, a decimal, or a smaller fraction. perhaps a mixed number.
Answer:
Theta = 0, 60 degrees.
Step-by-step explanation:
2 sin^2 theta + 3 cos theta = 3
Using the identity sin ^2 theta = 1 - cos^2 theta :
2(1 - cos^2 theta) + 3 cos theta = 3
2 - 2cos^2 theta) + 3 cos theta = 3
2 cos^2 theta - 3 cos theta + 3 - 2 = 0
2 cos^2 theta - 3 cos theta + 1 = 0
(2 cos theta - 1)(cos theta - 1) = 0
cos theta = 1/2 , cos theta = 1
Theta = 60 degrees or theta = 0
Ok so he will need to have $630 to pay his sister back and buy the bike. Now do 630 divided by 30 to get 21 weeks of saving to get enough money