Answer: The level of confidence is 86%.
Step-by-step explanation:
From the information given
Number of sample, n = 100
Mean, u = $37.51
Standard deviation, s = $16.44
Firstly, we would determine the upper and lower limits of the mean. Therefore,
For upper limit, it is
39.95 - 37.51 = 2.44
For lower limit, it is
37.51 - 35.07 = 2.44
Limit = ± 2.44
We will apply the formula
Confidence interval which is expressed as
= mean ± z × standard deviation/√n
It becomes
37.51 ± z × 16.44/√100
= 37.51 ± z × 1.644
= 37.51 ± 1.644z
Therefore,
1.644z = 2.44
z = 2.44/1.644 = 1.48
The level of confidence corresponding to the z value is 86%
Answer:
it is 1.31148125 m2
Step-by-step explanation:
Answer:
y = - 2 / 3 x +4
Step-by-step explanation:
gradient of the line = 0 - 6 / 6 + 3
= - 2 / 3
y intercept of the line is where the line meets the y axis = (0, 4)
Equation of the line
y = mx + c
where m is the gradient and c is the y intercept
m = - 2 /3 and c = 4
so the equation is y = -2/3 x + 4
50. add all the sides and subtract 180 because it has to equal 180
Answer:
140
Step-by-step explanation:
From the 1st base to the 2nd base is 70 feet.
From 2nd base to 3rd base is 140 because 70×2=140.
Another way to do this is 70+70=140.
Hopefully this helps :)
