Answer:
± 4.05
Explanation:
Data provided in the question:
Random sample size = 15
Standard deviation = 8
Confidence level = 95%
Now,
Margin of error is given as:
Margin of error = ± [ ( z × s ) ÷ √n ]
Here,
From standard z table for 95% confidence level z = 1.96
Margin of error = ± [ ( 1.96 × 8 ) ÷ √15 ]
or
Margin of error = ± [ 15.68 ÷ 3.873 ]
or
Margin of error = ± 4.05
Answer:
f(x) = -1.25x + 64 I hope this helps :)
Explanation:
total amount of money: $80
He spent $16 for the entrance of the fair and food.
80-(4+12) = 64
After that you subtract $1.25 per ride = -1.25x
Then it gives the function:
f(x) = -1.25x + 64
Answer:
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