Answer:
The upper limit of a 95% confidence interval for the population mean would equal 83.805.
Step-by-step explanation:
The standard deviation is the square root of the variance. Since the variance is 25, the sample's standard deviation is 5.
We have the sample standard deviation, not the population, so we use the t-distribution to solve this question.
T interval:
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 15 - 1 = 14
Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of 0.95(). So we have T = 1.761
The margin of error is:
M = T*s = 1.761*5 = 8.805.
The upper end of the interval is the sample mean added to M. So it is 75 + 8.805 = 83.805.
The upper limit of a 95% confidence interval for the population mean would equal 83.805.
Answer:
-
Step-by-step explanation:
y−6−y−8−x4−x−5
=y+−6+−y+−8+−x4+−x+−5
Combine Like Terms:
=y+−6+−y+−8+−x4+−x+−5
=(−x4)+(−x)+(y+−y)+(−6+−8+−5)
=−x4+−x+−19
Answer:
=−x to the power of 4 minus x minus 19
just put in the symbols were my answers are
Answer:
The tire turning around 180 degree in every seconds
Step-by-step explanation:
we know that
one time period is same as one complete rotation
so,
one time period = 360 degree
so,
T=360 degree
we know that
Time period is the time after which value repeats itself
so, we get time period as
so,
2 seconds = 360 degree
now, we can find for 1 second
So,
The tire turning around 180 degree in every seconds
Answer: 10
Step-by-step explanation:
1. Write the fractions as 2/9 times 45/1.
2. Cross cancel 45 and 9 by dividing by 5, which now gives you 2/1 and 5/1.
3. Multiply 2/1 and 5/1 and you get 10.
I hope this helps!
Question: What is the rat unit of 1700 and 40=> Since you have not given me the unit of meaure to use in the said unit rate. I will no longer tackle something about it. I will only show you how it works.=> Let say 1 700 is the number we need to divide by 40.=> 40 is our divisor then=> 1 700 / 40 = 42.5 let say 1 700 is the amount you receive in 4o days <span>Thus in everyday you receive 42.5 / day</span>