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Show your work as well

Question

Please help me! I am so stuck on this problem! Show your work as well. Thank you!!!

 
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Use Gauss’s approach to find the following sum

Question

Use Gauss’s approach to find the following sum(do not use formulas): 4 + 10 + 16 + 22 + … + 82

 
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Math principles are used throughout the Bible

Question

Math principles are used throughout the Bible. Provide at least one example of where math is used in the Bible

and explain why math was important to that situation(s).

 
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In a random sample of 40 ​refrigerators, the mean repair cost was ​$144.00

Question

In a random sample of 40 ​refrigerators, the mean repair cost was ​$144.00 and the

population standard deviation is ​$18.50.

A 90​% confidence interval for the population mean repair cost is (139.19,148.81).

Change the sample size to n=80. Construct a 90​% confidence interval for the population mean repair cost. Which confidence interval is​ wider? Explain.

Construct a 90​% confidence interval for the population mean repair cost.

The 90​% confidence interval is ​( __ ​,__ ​).

 
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