Answer:
8/20 + 5/20 = 13/20
Step-by-step explanation: You would have to multiply the numerator and denominator of 2/5 by 4 to get 8/20 and multiply the numerator and denominator of 1/4 by 5 to get 5/20, equaling to 13/20.
Answer:
1. 1 7/8
Step-by-step explanation:
1.
4/5x + 4 = 2 2/5x + 1
4/5x = 2 2/5x -3
-1 3/5x = -3
15/8
im too lazy to finish the rest
You need to continue to simply it until it is in the form x^2 +bx+ c. Then try the box and diamond method.
Answer:
a)
b)Yes
Step-by-step explanation:
n = 593
x = 28
Confidence level = 95%
So, at 95% = 1.96
Formula of confidence interval of one sample proportion:
=
=
=
Hence a 95 percent confidence interval for the proportion of all new websites that were anonymous is
b) May normality of p be assumed?
Condition for normality : np>10 and np(1-p)>10.
and
27.871 and 26.561063
Hence p is assumed to be normal since the condition is satisfied