Option 1 is the correct answer. The open circle means that the end value (78) is not included in the solution. That is why the inequality statement says 78 > x.
Answer:
y = 4
x = 8
Step-by-step explanation:
here's the solution :-
we know, x = 2y
so,
=》x + y = 12
=》2y + y = 12
( because x = 2y )
=》3y = 12
=》y = 12 ÷ 3
=》y = 4
so, y = 4
now,
=》x = 2y
=》x = 2 × 4
( because, y = 4 )
=》x = 8
so, we get x = 8
Answer:
The 90% confidence interval is 0.575 to 0.625.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval , we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of .
For this problem, we have that:
90% confidence interval
So , z is the value of Z that has a pvalue of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 90% confidence interval is 0.575 to 0.625.
He could do 1/2+1/2+1/2=1 and 1/2+1/8+1/8=1 and 3/4. He could also do 1/2+1/2+1/8+1/8+1/8+<span>1/8+1/8+1/8=1 and 3/4.</span>