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professor190 [17]
3 years ago
15

When a statistic calculated from sample data is used to estimate a population parameter, it is called a point estimate?

Mathematics
1 answer:
Mazyrski [523]3 years ago
8 0

The sample statistic which we use to estimate population parameter is called point estimate. Because we use single sample statistic to make estimate about population parameter . It gives particular single value which we can use as estimate of population parameter, hence it is called point estimate.

Ex: Suppose we have population mean and we use sample mean to find estimate population mean. Then Population mean is called parameter, sample mean is statistic. And as we have used sample mean as estimate of population mean , sample mean is called as point estimate.

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Answer:

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2 years ago
Orchid wants to retile her bathroom floor, which has an area of 40 square feet. She is deciding between two types of custom tile
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Your answer is the second option, she should choose the rectangular tiles because the total cost will be $8 less.

To find this answer we need to first find the total cost for using square tiles, and the cost for using rectangular tiles, and compare them. We can do this by finding the area of each tile individually, calculating how many tiles we would need, and multiplying this by the cost for one tile:

Square tiles:

The area of one square tile is 1/2 × 1/2 = 1/4 ft. Therefore we need 40 ÷ 1/4 = 160 tiles. If each tile costs $0.45, this means the total cost will be $0.45 × 160 = $72

Rectangular tiles:

The area of one rectangular tile is 2 × 1/4 = 2/4 = 1/2 ft. Thus we need 40 ÷ 1/2 = 80 tiles. Each tile costs $0.80, so the total cost will be 80 × $0.80 = $64.

This shows us that the rectangular tiles will be cheaper by $8.

I hope this helps! Let me know if you have any questions :)

6 0
3 years ago
Please help and show wprk
mr Goodwill [35]
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3 years ago
Ms. Ferguson is considering reserving a room at the Abraham Hotel. The Abraham Hotel charges $239 a night.
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6 0
3 years ago
The curved part of this figures is a semicircle.
SCORPION-xisa [38]
The answer is 14+8.125π units².<span>
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4 0
3 years ago
Read 2 more answers
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