17. The radius of a circular path is 7m. Find the cost of fencing the path if the cost per meter is Rs.35
1 answer:
The cost of fencing the path is Rs 1539.38.
It is required to find the cost of fencing the path.
<h3>What is circle?</h3>A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “centre”. The perimeter around the circle is known as the circumference.
Given that:
radius of a circular path is 7m.
Rate = Rs .35 per meter
We know that
Circumference of circle =
Circumference of circle=43.98 m
Now,
Cost = Circumference × Rate
Cost =43.98× 35
Cost = Rs 1539.38
Therefore, the cost of fencing the path is Rs 1539.38.
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Answer:
1)
The point estimate for the proportion of college graduates among women who work at home is 0.327
2)
The 80% confidence interval is given by (0.315; 0.339)
Step-by-step explanation:
For this case we have the following info given:
represent the women who worked at home who were college graduates
the sample size selected
Part 1
In order to find the proportion of college graduates among women who work at home and we can use the following formula:
The point estimate for the proportion of college graduates among women who work at home is 0.327
Part 2
Construct an 80% confidence interval for the proportion of women who work at home who are college graduates. Round the answer to three decimal places. An 80% confidence interval for the proportion of women who work at home Is < p <
The confidence interval for the true proportion would be given by this formula
For the 80% confidence interval the value for the significance is and
, the critical value would be given by:
And replacing we goot:
The 80% confidence interval is given by (0.315; 0.339)