Answer:
the confidence interval is 90 % 0.05 < p < 0.75
and margin of error is 35 %
Step-by-step explanation:
Since 9 out of 10 students is 90 % so the confidence interval is 90 %
Range of Confidence Interval = 2* ME where ME = Margin of Error
0.75 - 0.05 = 2* ME
0.7 = 2 * ME
0.7 / 2 = ME
0.35 = ME or
ME = 35 %
Answer:
Step-by-step explanation:
This is a poisson distribution. Let x be a random representing the number of calls in a given time interval.
a) the expected number of calls in one hour is the same as the mean score in 60 minutes. Thus,
Mean score = 60/2 = 30 calls
b) The interval of interest is 5 minutes.
µ = 5/2 = 2.5
We want to determine P(x = 3)
Using the Poisson probability calculator,
P(x = 3) = 0.21
c) µ = 5/2 = 2.5
We want to determine P(x = 0)
Using the Poisson probability calculator,
P(x = 0) = 0.08
Your equation is
7h + 1.50d = Colton's total earnings
We just need to plug in our known numbers for the variables in the equation.
The given numbers are that h=15 and d=8
7(15) + 1.50(8) = Colton's total earnings
Now we just need to simplify this equation by multiplying out the numbers on the left side of the equation.
105 + 12 = Colton's total earnings
Now we add the numbers on the left side of the equation to find Colton's total earnings.
117= Colton's total earnings
Therefore, after working 15 hours and making 8 deliveries, Colton will have earned $117.
Answer:
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The answer is b+9 I believe