Terrence signed up for the Safe Venture driving school. He will spend 10 hours driving with an instructor and will also attend w
eekly 2-hour classes. When Terrence completes the 26 total hours of instruction, he will take his driver's test.
Which equation can you use to find w, the number of weeks the driving class lasts?
2(w + 10) = 26
10(w + 2) = 26
2w + 10 = 26
10w + 2 = 26
How many weeks does the driving class last?
Pls help
Which equation can you use to find w, the number of weeks the driving class lasts?
2(w + 10) = 26
10(w + 2) = 26
2w + 10 = 26
10w + 2 = 26
How many weeks does the driving class last?
Pls help
2 answers:
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Answer:
And rounded up we have that n=656
Step-by-step explanation:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by and
. And the critical value would be given by:
Solution to the problem
The margin of error for the proportion interval is given by this formula:
(a)
Since we don't have prior info for the proportion of interest we can use as estimator. And on this case we have that
and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
And replacing into equation (b) the values from part a we got:
And rounded up we have that n=656