It is b
Hope That this helps
I’m pretty sure it’s the third option, Bella saves more per chore than Sweet T. If you replace the c in Bella’s equation with 1, it would be 3.5 times 1 which is 3.5 and then add 11 and it would be 14.5 which is more then Sweet T. You can do this with the rest of the numbers and Bella would still have more then Sweet T. Per chore
Ok so basically.... 15^2= 9^2+ x^2
15*15
225= 81+x
-81. -81
144=x^2
12=X
Im pretty sure it’s right!
I used the formula A^2+B^2=C^2
<span>0.053
The standard deviation of a binomial variable is
sqrt(n*P*(1-P))
where n is the sample size and P is the probability of one of the outcomes.
The sample size is 55 and we'll assume that both male and female are equally likely outcomes.
standard deviation = sqrt(55*.5*.5) = 3.7081%
44% is 1.6181 standard deviations away from the mean of 50%.
Looking this up on a standard deviation chart gives .0526 probability which we'll round to 0.053</span>