Answer:
the answer of your question
44
1 answer:
Peterson will need 39 more tiles to completely cover the kitchen floor
Step-by-step explanation:
Given dimensions of kitchen are:
12 feet and 7 feet
In order to find the number of tiles for the kitchen, we have to first find the area of the kitchen
So,
Area of kitchen:
The area is 84 square feet which means 84 one square foot tiles are needed to completely cover the floor of kitchen.
As Peterson already has 45 tiles, so the more tiles she will need is:
Hence,
Peterson will need 39 more tiles to completely cover the kitchen floor
Keywords: Units, areas
Learn more about area at:
#LearnwithBrainly
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Answer:
So on this case the 98% confidence interval would be given by (3.767;4.233)
Step-by-step explanation:
Previous concepts
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".
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".
represent the sample mean
population mean (variable of interest)
represent the population standard deviation
n=100 represent the sample size
Solution to the problem
The confidence interval for the mean is given by the following formula:
(1)
Since the Confidence is 0.98 or 98%, the value of and
, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.01,0,1)".And we see that
Now we have everything in order to replace into formula (1):
So on this case the 98% confidence interval would be given by (3.767;4.233)