Answer:
[ 502.5, 517.5]
Step-by-step explanation:
Given:
Mean of the sample, µ = 510
Total sample size, n = 100
Standard deviation = 75
Confidence level = 95%
Now,
The interval for µ is given as:
⇒ µ ±
for 95% confidence level z value = 1.96
Thus,
The interval for µ
⇒ 510 ±
or
⇒ 510 ± 7.5
or
⇒ [ 510 - 7.5, 510 + 7.5 ]
or
⇒ [ 502.5, 517.5]
Answer:
b
Step-by-step explanation:
just because not 100% sure but if i remember correctly how to do it its b
Answer:
i can say its an accute triangle sorrry
Step-by-step explanation:
Hey, Melany. To answer this problem, simply set up a proportion: . Now let's solve for x.
- Cross multiply:
- Isolate x:
This means that x = 24.
There are 24 9th graders in the band.
Answer:
y-intercept is 10
slope of line is 7
Explanation:
The general form of the linear equation is:
y = mx + c
where:
m is the slope
c is the y-intercept
Now, the given equation is:
y = 7x + 10
Comparing the given equation with the general form, we will find that:
m = 7 .............> This means that the slope of the line is 7
c = 10 ............> This means that the y-intercept is 10
Now, the y-intercept here means that the initial number of points at time = 0 (x=0) is 10 points.
The slope here means that the rate increases by 7 points each second
Hope this helps :)