The answer is 3/40. Because 9/12=3/4. That has to be multiplied by 1/10. That will give 3/40.
Answer:
72 sides
Step-by-step explanation:
The sum of the angles of a polygon with n sides is (n−2) × 180
Since the polygon is regular, we can divide by the number of sides to find the measure of each angle (n−2) × 180 / n
Each angle is equal to 175
(n−2) × 180 / n = 175
Multiply each side by n
(n-2)180 = 175n
Distribute
180n -360 = 175n
Subtract 180n from each side
180n-180n-360 = 175n-180n
-360 = -5n
Divide each side by -5
-360/-5 =-5n/-5
72 = n
There are 72 sides
Answer:
521
Step-by-step explanation:
f = factory
fTotal = 1,700
female workers = 640
0.4 female workers are under 35
0.25 male workers are under 35
1,700 - 640 = 1,060
Male Workers = 1,060
0.4% of 640 = 256
0.2% of 1060 = 265
256 + 265 = 521
521 of workers are under the age of 35
Answer:
a)
, in which z is related to the confidence level.
b) A sample size of 991 is needed.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
In 16% of all homes with a stay-at-home parent, the father is the stay-at-home parent
This means that
a. What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.03 (round up to the next whole number).
This is n for which . So
, in which z is related to the confidence level.
Question b:
99% confidence level,
So , z is the value of Z that has a pvalue of , so .
Rounding up
A sample size of 991 is needed.
Answer:
7
Step-by-step explanation:
19 - 4(3) = 19 - 12 = 7
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