Answer:
z is a variable so it can be any number.
z=-3
if you do -8 times -3 that equals 24.
the answer is -3
Step-by-step explanation:
Answer:
It's not clear on what it means but the information given it would just be 20*3=60
Step-by-step explanation:
I'm assuming, from what you've given me that the question is asking to do this.
15n=647
647 divided by 15 equals 43.13...repeated
Let me know if this is what you are looking for.
We use the formula:
x± s <span>t_<span>(1−c)/2 / </span></span>√n = 5
(1 - c)/2 = (1 - 0.95) / 2 = 0.025
Using the t score calculator at this value, at the 95% confidence internval,
t = 0.5080, So
100 - 19(0.5080) / √n = 5
Solving for n
n = 97
a) 97
b) yes
