The Smith family wants to fence their yard. The yard is 96 meters and 52 meters wide. How much fencing will they need?
1 answer:
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The correct answer is: [A]: " 
" .
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<u>Note</u>: "3/4" = "6/8" = "15/20" .
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<u>Note</u>: "3/4" = "6/8" = "15/20" .
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Answer:
atleast 385
Step-by-step explanation:
Given that an electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricity, they would like know the mean daily power usage for homes there.
Population std deviation =
Sample size =
STd error of sample mean =
Margin of error for 95% would be Critical value ( std error)
Here since population std dev is known we can use Z critical value= 1.96
Sample size should be atleast 385