C2 - 6c-5 Evaluate the expression when c = -2
1 answer:
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<u>Answer:</u>
cubic feet
<u>Step-by-step explanation:</u>
We are given that the weight of water is 62 and one half lb per cubic foot and we are to find the number of cubic feet that would be occupied by 180 lb of water.
For that, we will divide total amount of water by per unit weight of water:
Cubic feet occupied by 180 lb of water = = 2.88 cubic feet or
cubic feet
Answer:
The 99% confidence interval is
Step-by-step explanation:
From the question we are told that
The sample size is
The sample mean is
The standard deviation is
Given that confidence is 99% then the level of significance is mathematically represented as
Next we obtain the critical values of from the normal distribution table
The value is
Generally the margin for error is mathematically represented as
=>
=>
The 99% confidence interval is mathematically represented as
=>
=>