Answer:
3 cm base 4 cm height
Step-by-step explanation:
Answer: 
Step-by-step explanation:
The confidence interval to estimate the population mean is given by :_

Given : Sample size : n= 60 , the sample is a large sample (n>30), so we can apply z-test.
Sample mean = 
Standard deviation : 
Level of confidence:

Then, critical z-value =
Then, a 95% confidence interval estimate of the population mean will be

Hence, the 95% confidence interval to estimate the population mean =
.
Answer:
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Step-by-step explanation:mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
A = 1/2B -2
C = B+2
B = B
A+ B +C = 60
1/2B -2 +B + 2 +B = 60
2.5B = 60
B = 24
A = 1/2(24) -2
A = 10
C = (24) + 2
C= 26