Answer: n = 14
Step-by-step explanation: margin of error = critical value × σ/√n
Where σ = population standard deviation = 1
n = sample size = ?
We are to construct a 99% confidence interval, hence the level of significance is 1%.
The critical value for 2 tailed test at 1% level of significance is gotten from a standard normal distribution table which is 2.58
Margin of error = 0.7
0.7 = 2.58×1/√n
0.7 = 2.58/√n
By cross multipying
0.7×√n = 2.58
By squaring both sides
0.7^2 × n = 2.58^2
0.49 × n = 6.6564
n = 6.6564/0.49
n = 14
Answer:
1/6y^4
Step-by-step explanation:
sorry if I'm wrong
I would need to know the amount of $ the rental life jackets and canoe are.
Answer:
x = [-b +-sq root (b^2 -4ac)] / 2a a=2 b=-2 c=3
x = [--2 +- sq root(4 - 4*2*3)] / 2*2
x = [2 +- sq root (-20)] / 4] / 4
x1 = 2 + 4.472135955 i / 4
x1 = .5 + 1.1180339887i
x2 = 2 - 4.472135955 i / 4
x2 = .5 - 1.1180339887i
Step-by-step explanation: