Answer:
What's the value for P and L?
Step-by-step explanation:
2W = 2L - P
W = (2L - P) / 2
They are both equal to below zero
Answer:
1877 computer users
Step-by-step explanation:
We have that for 95% of confident, the value of z has a value of 1.96 (attached table about it), they also mention the margin of error (E) that is 10 and finally the standard deviation (sd) that has a value of 221.
We apply the following formula:
n = [z * sd / E] ^ 2
replacing:
n = [1.96 * 221/10] ^ 2
n = 1876.27
that is, the minimum sample size is 1877
Answer:
39
Step-by-step explanation:
Answer:
a. {(0, 7), (-1, 6)}
Step-by-step explanation:

subtract the equations

for
, substitute x = 0

for
, substitute x = 0
