In this
problem, the given values are:
x = average =
30.4
s = standard
deviation = 7.1
n = number of
samples = 25
Degrees of
freedom = n -1 =24
Using the
t-distribution table for a normal curve at 90% CI, we get t-crit:
t-crit = 1.711
Now the Margin
of Error (E) is calculated as:
E = t-crit*(s/
)
By substituting the known values into the equation:
E = 1.711 * (7.1/
)
E = +- 4.30
Therefore, the margin of error is 4.36. Hence, the commute time
is between 26.1 minutes and 34.7 minutes.
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Answer:
Since the shape is an corresponding angle, you would work out the question like this:
(3x + 22) = (x + 30)
X = 4
Therefore X is equal to 4. No rounding is needed.
I'm NOT a math teacher, please double check my answer!
Cheers! :)
Answer:
Percent error item Books I think thats the right answer.
Step-by-step explanation:
Answer:
We are given a linear equation in the slope-intercept form .