Answer:
98% confidence interval: (0.29, 0.73)
Step-by-step explanation:
We are given the following in the question:
Sample size,n = 54
Sample variance =
Significance level = 0.02
Degree of freedom = n - 1 = 53
We use chi-square to find the confidence interval for population variance.
Formula:
Putting values, we get,
is the required 98% confidence interval for the variance of the weights of the packages prepared by the machine.
QUESTION:
Choose the best option that represents 23/100
23000%
230%
0.23
0.023
ANSWER:
I'n all choices the correct answer is
EXPLANATION:
You just need to convert a faction to a decimal by dividing the numerator by the denominator to get
hope it's helps
Answer:
20
Step-by-step explanation:
Given that the area of the rectangle is equal to that of the triangle
Area of triangle $ABC$
= 1/2 (bh)
Given that the sides of the triangle are $6$ units, $8$ units, and $10$ units,
The base and the heights are $6$ units and $8$ units. The $10$ units is the hypotenuse
From Pythagoras theorem,
6^2 + 8^2 = 10^2
Therefore, area of triangle
=1/2 (6 × 8)
= $24$ units^2
Area of rectangle = L × W
Where L = Length, W = Width
Area of the rectangle = area of triangle
L × 4 = 24
L= 24/4
L = $6$ Units
Perimeter of rectangle
=2 (L + B)
= 2(6 + 4)
= $20$ Units
B= -42 C= -38
So the difference going up to positive is 4 and the difference going down in negative is -4.