Answer:
z = 1.960
Step-by-step explanation:
The sample proportion is:
p = 715 / 2684 = 0.2664
The standard error is:
σ = √(pq/n)
σ = √(0.266 × 0.734 / 2684)
σ = 0.0085
For α = 0.05, the confidence level is 95%. The z-statistic at 95% confidence is 1.960.
The margin of error is 1.960 × 0.0085 = 0.0167.
The confidence interval is 0.2664 ± 0.0167 = (0.2497, 0.2831).
The upper limit is 28.3%, so the journal can conclude with 95% confidence that the true percentage is less than 29%.
You can't multiply anything to get a prime number ?
Step-by-step explanation:
Let the two parts be 7x and 5x.
7x=35 :.X=5
5x= 5×5=25
Thus,Total length of pole is 35+25=60
Answer:
-11
Step-by-step explanation:
first substitue the variables with the number then solve
-6(3)+7
-18+7= -11
Answer: a<-3
dont forget the dash under the comparison for A is less or equal to negative 3
Step-by-step explanation:
10+2a<4
10-10+2a<4-10
2a<-6
2/2a<-6/2
a<-3
I simplified the inequality as if it were an equation.
For graphing just make up some random values/ numbers and graph it
