Answer:
9/20, or 0.45 mile.
Step-by-step explanation:
To find the area of a rectangle, multiply length times width. In this problem we are given both the length and width.
×
is just 9/20, which is 0.45.
You and your friend drive toward each other. The equation 50h=190−45h, h represents the number of hours until you and your frien
d meet. When will you meet? Solve for h
2 answers:
Answer:
You meet with your friend after 2 hours.
Step-by-step explanation:
Consider the provided equation.
Where, h represents the number of hours until you and your friend meet.
We need to solve the equation for h.
Add 45h to both the sides of the equation.
Now divide both the sides by 95.
Hence, you meet with your friend after 2 hours.
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To solve this problem you must apply the proccedure shown below:
1- You must apply the following formula:
Where is the residual,
is the observed value
and
is the predicted value
.
2- You only need to substitute the into the equation
and then, you must apply the formula for calculate the residual:
The answer is: The residual is
Answer:
The confidence interval on this case is given by:
(1)
For this case the confidence interval is given by (62.532, 76.478)[/tex]
And we can calculate the mean with this:
So then the mean for this case is 69.505
Step-by-step explanation:
Previous concepts
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
represent the sample mean
population mean (variable of interest)
represent the population standard deviation
n represent the sample size
Assuming the X follows a normal distribution
The confidence interval on this case is given by:
(1)
For this case the confidence interval is given by (62.532, 76.478)[/tex]
And we can calculate the mean with this:
So then the mean for this case is 69.505