Answer:
z=14.73
p=0.000
for 99% confidence level the null hypothesis is rejected, thus majority of us adults would not bothered if the NSA collected personal records.
Step-by-step explanation:
: Half of US adults would not bothered if the NSA collect records of personal telephone calls
: Majority of the adults would not bothered if the NSA collect records of personal telephone calls
According to the sample, z-value can be found using the formula:
z=
where
- X is the adults, who would not be bothered in the survey (397)
- M is the mean of the distribution of null hypothesis (257)
- n is the sample size (514)
- p is the proportion of the sample, who said they would not bothered (
≈ 0.77)
Putting these numbers in the formula,
z=14.73 and corresponding p value is p≈0.000
Since p<0.01, for 99% confidence level we reject the null hypothesis, thus majority of us adults would not bothered if the NSA collected personal records.
Answer:
n=1/5
Step-by-step explanation:
12n -8-2n+10-4
10n=2
n=2/10
n=1/5
When x equals to 4
4-4 = 0
-------------
4-6 = -2
0/-2 = 0
hope this helps
<span> the answer is: 9.16485485837795, -6.16485485837795. but if you need the work here it is</span><span>
Step 2. Let 2L-6 be the width since the width of a rectangle is 6 less than twice its length.
Step 3. Area A=113=L*(2L-6)
Step 4. Solving for L yields the following steps
Subtract 113 from both sides of the equation to get a quadratic equation
To solve for L, we can use the quadratic formula given as
where a=2, b=-6 and c=-113
<span><span>Solved by pluggable solver: SOLVE quadratic equation with variable</span><span>Quadratic equation (in our case ) has the following solutons:
For these solutions to exist, the discriminant should not be a negative number.
First, we need to compute the discriminant : .
Discriminant d=940 is greater than zero. That means that there are two solutions: .
</span></span></span>
Just add 7 + 24 = 31
So Brian brought 31 logs to the campfire.
