Answer:
u = 135
hoped i helped u
Step-by-step explanation:
Answer:
(A, B) = (-3, -129).
Step-by-step explanation:
First convert the first equation to slop-intercept form:
x + 5y = 7
5y = -x + 7
y = -0.2x + 1.4
The slope is -0.2 so the slope of the line perpendicular to this line has slope
-1/ -0.2 = 5.
Now, converting the second equation to slope-intercept form:
15x + Ay = B
Ay = -15x + B
y = (-15/A)x + B/A
So the slope -15/A = 5 so A = -3.
So y = 5x + B/-3
Substituting the point (-8, 3)
3 = 5(-8) + B/-3
B/-3 = 43
B = - 129.
Answer:
B: Retain the null hypothesis
Step-by-step explanation:
In the relationship between the confidence interval and hypothesis, it is stated that:
When the confidence interval is constructed, all values that fall inside the interval are considered possible values for the parameter that we are estimating while values that fall outside the interval are rejected as they are considered not possible or realistic values.
Now, If the value of the parameter specified by the null hypothesis falls inside the given confidence interval, then we will fail to reject the null hypothesis at the corresponding significance level. However, If the value specified by the null hypothesis doesn't fall inside the given confidence interval, then the null hypothesis can be rejected at the corresponding significance level.
This is called random sampling. the other type of sampling is stratified sampling. :)
200 miles, 2.5 divided by 3/4 is 3.33333-, 3.333- multipled by 60 is 199.98 which you can round to 200.
