WILL MARK BRANLIESTTT What is the value of x? A. 42° B. 48 C. 64° D. 84
1 answer:
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Answer:
Jack has to sell the old computers worth $8000
Step-by-step explanation:
Jack is paid for selling used computers = $15 per hour plus 5% commission
Let the revenue generated from selling the computers by him = $x
He will be paid for 40 hours = $(40×15) = $600
Commission earned by selling x computers = $0.05x
Total amount earned by him in 40 hours week = 600 + 0.05x
If this amount is $1000,
$1000 = $(600 + 0.05x)
0.05x = 1000 - 600
0.05x = 400
x =
x = $8000
Therefore, Jack has to sell the old computers worth $8000.
Answer:
a) Going to public places like restaurants, parks, theaters, etc in Madison and asking voters.
b) The 80% CI to estimate the true proportion of registered voters in the City of Madison who vote in non-presidential elections is (0.5533, 0.6667).
c) We are 80% sure that our confidence interval contains the true proportion of registered voters in the City of Madison who vote in non-presidential elections.
d) The lower limit of the interval is higher than 0.5. This means that it does seem that MORE than half of registered voters in the City of Madison vote in non-presidential elections.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence interval
, we have the following confidence interval of proportions.
In which
Z is the zscore that has a pvalue of .
(a) How might a simple random sample have been gathered?
Going to public places like restaurants, parks, theaters, etc in Madison and asking voters.
(b) Construct an 80% CI to estimate the true proportion of registered voters in the City of Madison who vote in non-presidential elections.
You take an SRS of 200 registered voters in the City of Madison, and discover that 122 of them voted in the last non-presidential election. This means that .
We want to build an 80% CI, so , z is the value of Z that has a pvalue of
.
The lower limit of this interval is:
The upper limit of this interval is:
The 80% CI to estimate the true proportion of registered voters in the City of Madison who vote in non-presidential elections is (0.5533, 0.6667).
(c) Interpret the interval you created in part (b).
We are 80% sure that our confidence interval contains the true proportion of registered voters in the City of Madison who vote in non-presidential elections.
(d) Based on your CI, does it seem that fewer than half of registered voters in the City of Madison vote in non-presidential elections? Explain.
The lower limit of the interval is higher than 0.5. This means that it does seem that MORE than half of registered voters in the City of Madison vote in non-presidential elections.