Answer:
75
Step-by-step explanation:
For this, you need to solve a proportion-
3.4 x
----- = -----
1.8 39.75
3.4*39.75=135.15
135.15/1.8= 75.0833.....
75.0833.. is rounded to 75
The outlier is 20
it affect the mean because
1)32 +40+34+ 31 +20+ 36 +40+31=264
2) 264 divided by 8= 33
so it gives you an odd number
Answer:
6
Step-by-step explanation:
Hayden uses 3 cups of water to make a broth for soup
He uses 3 times as many cups of milk
Therefore the number of broth ounces made by Hayden can be calculated as follows
= 3+3
= 6
Answer:
There is enough not evident to support dealer's claim that his sales is no more than $80.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = $80
Sample mean, 
= $91
Sample size, n = 20
Alpha, α = 0.05
Sample standard deviation, s = $21
First, we design the null and the alternate hypothesis
We use one-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
Now, 
Since,
The calculated test statistic is greater than the critical value, we fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.
Conclusion:
There is enough not evident to support dealer's claim that his sales is no more than $80.
Answer:
44 years
Step-by-step explanation:
The sum of the ages of Michael and Leah is 71 years. 10 years ago, Michael's age was 2 times Leah's age. How old is Michael now?
Let Michael age = x , Leah = y
x+ y = 71 ....... ..(1)
10 year ago
Michael = x -10
Leah = y - 10
Michael = 2×leah
x - 10 = 2(y-10)
x - 10= 2y - 20
x - 2y = -20+10
x - 2y = -10 ...........(2)
x + y = 71 ......... (1)
Solve simultaneously using elimination method, subtract 1 from 2
-2y - y = -10-71
-3y = -81
Divide both sides by -3
y = -81/-3
y =27
x+y = 71
Put y =27
x+27= 71
x = 71 -27
x =44 years
Therefore Michael is 44years
I hope this was helpful, please mark as brainliest
