Answer:
(5.871 `; 6.127)
Step-by-step explanation:
Given :
Mean = 6
Standard deviation. σ = 0.5
Samplr size, n = 100
Zcritical at 99% confidence = 2.58
The confidence interval :
Mean ± margin of error
Margin of Error = Zcritical * σ / sqrt(n)
Margin of Error = 2.58 * 0.5/sqrt(100) = 0.129
Confidence interval :
Lower boundary = 6.00 - 0.129 = 5.871
Upper boundary = 6.00 + 0.129 = 6.129
(5.871 `; 6.127)
Answer:
23.4 if your asking 260 percent times 9 dollars
12 5/25 as a simplified mixed number would be 12 1/5
I think it will be B 610 and 820 but im not sure.
Hope This Helps!
~Cupcake
2 and 14/15
Because the first step of subtraction is common denominators
