The cost of the apple is expressed as y = 12x + 6, where x is the number of apples. Find the cost of dozen apples.
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Answer:
Step-by-step explanation:
For this case we have a confidence interval given as a percent:
If we express this in terms of fraction we have this:
We know that the confidence interval for the true proportion is given by:
And thats equivalent to:
We can estimate the estimated proportion like this:
And the margin of error can be estimaed using the fact that the confidence interval is symmetrical
And then the confidence interval in the form desired is: