Answer: No, the means in the two studies significantly is not different at the 95% confidence level.
Step-by-step explanation:
Since we have given that
Study 1,
Mean = 30.8,
Standard Deviation = 6.2,
Sample size = 100
And
Study 2
Mean = 32.2,
Standard Deviation = 5.4,
Sample size = 200
So, Hypothesis would be
So, At 95% confidence level, z = 1.96
So, the test statistic value would be
Since 1.96>-1.9228
So, we will accept the null hypothesis.
Hence,No, the means in the two studies significantly is not different at the 95% confidence level.
Step By Step:
With each expression we will first simplify (combine like terms), then substitute, and then solve.
First Expression:
1/2x + 4
Simplify:
There is no like terms so we result in 1/2x + 4 still
Substitute:
1/2x + 4
1/2(2) + 4
Solve:
1/2(2) + 4
1 + 4 = 5
Second Expression:
x + -1/2x - 2
Simplify:
x + -1/2x - 2
1/2x + (-2)
Substitute:
1/2x + (-2)
1/2(2) + (-2)
Solve:
1/2(2) + (-2)
1 + (-2)
1 - 2 = -1
Answer:
None of the answers are correct from what I can see. Although, we do know that the two expressions are not equivalent considering we got two completely different answers, so your answer could not be A or B. Next, we know that one expression equals 5, which can remove D and leave us with only C. This leaves us with only to guess of what the answer is.
Answer:
A. The graph is a line that goes through the points (9,0) and (0,6).
Step-by-step explanation:
Given
Required
Select the true options
This implies that"
So, we have:
So, we have:
<em>Hence (a) is true.</em>
Answer:
3,399.00
Step-by-step explanation:
According of the market value of a car model (check the attached picture), the market value of car is 20% of its original value after 5 years.
We know from our problem that the original cost of the car is $16,995, so we need to find the 20% of that original cost to find the current market value of the car.
current market value = 20% of $16,995
We need to convert the percentage to decimal so we can multiply the two and find the current value. To do it we just need to divide the percentage by 100%:
(20%)/(100%) =
current market value = (0.2)($16,995)
current market value = $3,399
We can conclude that the current market value of the car after 5 years is 3,399.00
A 6 sided figure’s angles are going to add up to 720 degrees. First, to find the value of x, you add up all of the angles.. 110 + 150 + 115 + 130 + 115 = 620. Next, you subtract 620 from 720 to get 100. Since that angle is equal to 2x, we now know that 2x = 100. Next, we dived 100 by 2 to get 50. So, the value of x = 50.
To find the value of y, we know that a straight line is equal to 180 degrees. Y and 130 degrees are supplementary angles. So, we subtract 130 from 180 to get 50 degrees. So, the value of y = 50