Paulette wrote the equation below to show f, the amount of framing she needs for a square frame with a side length of s centimet
1 answer:
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Answer:
1/2 = 3/6
1/3 = 4/12
1/5 = 2/10
1/4 = 5/20
Step-by-step explanation:
To make equivalent fractions, you need multiply by 1. A number divided by itself is 1.
1/1 * x/x = x/x = 1
1/2 = 3/6
1/3 = 4/12
1/5 = 2/10
1/4 = 5/20
Hope this helps :)
Have a great day!
Answer: (72.535, 76.665)
Step-by-step explanation:
The confidence interval for population mean is given by :-
, where = population standard deviation.
n= Sample size
= sample mean.
= Critical z-value (two-tailed)
Given :
n= 81
The critical values for 90% confidence interval :
Now, the confidence interval for population mean would be :
Hence, a 90 percent confidence interval estimatefor the average score of all students. : (72.535, 76.665)