Answer:
a) 25
b) 49
c) 97
Step-by-step explanation:
The sample size is calculated using the formula, n = 
Now,
for 95% confidence level value of z-factor = 1.96
Given:
Mean = $3.94
standard deviation = $0.25
thus,
a) for margin of error = $0.10
n =
or
n = 
or
n = 4.9²
or
n = 24.01 ≈ 25 (Rounded off to next integer)
b) for margin of error = $0.07
n =
or
n = 
or
n = 7²
or
n = 49
c) for margin of error = $0.05
n =
or
n = 
or
n = 9.8²
or
n = 96.04 ≈ 97 (Rounded off to next integer)
Answer:
The formula of (a+b)² and (a-b)² are as follows:
Step-by-step explanation:
(a+b)²=a²+2ab+b²
(a-b)²=a²-2ab+b²
Answer:
x = 152.6
Step-by-step explanation:
180 - 27.4 there you go
Answer:
0, 4, 8
Step-by-step explanation:
For a number to be divisible by 8, the number formed the last 3 digits must be divisible by 8.
You have 7_4.
Try 704: 704/8 = 88
0 works
Now you can add multiples of 8 to 704:
704, 712, 720, 728, 736, 744, 752, 760, 768, 776, 784, 792
The only other numbers of the form 7_4 are 744 and 784.
Answer: 0, 4, 8
The function is constant from x = -2 to x = 1
See how y = 5 there it is constant.
