At 95% confidence interval, true population mean is given by
x+/- 2sd
where x= sample mean and sd = sample standard deviation
True mean of population = 13.50 +/- 2*1.51 = 13.50+/-3.02
Interval: 13.50+3.02, 13.50-3.02 = 16.51, 10.48
In this question, we're calculating how much you're going to need to pay in parking.
We know that it costs 50¢ per hour
We also know that you park for 7 hours.
Note: They're trying to trick you here with the $4 per day, you wouldn't use this information because you're not parking for the whole day.
Calculate how much you're paying per day by multiplying 7 by 0.50
7 × 0.50 = 3.5
Now, multiply how much you pay everyday (3.5) by the amount of days your'e working (5)
3.5 × 5 = 17.50
This means that you will be paying $17.50 for 5 days of parking
Answer:
$17.50
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Is it a test quiz? are they any multiple answers?
I’m not sure what h and t are but you would want to plug them in and solve. How I would do it is multiply h and t on the left, then multiply t squared and get an answer, then multiply that answer by -5, then multiply t by 20. Next add or subtract all of the numbers on the right and I think you would get your answer.
