There were 5,317 previously owned homes sold in a western city in the year 2000. The distribution of the sales prices of these h
1 answer:
Answer:
(A) Approximately normal with a mean of $206,274 and a standard deviation of $3,788.
Step-by-step explanation:
The Central Limit Theorem asserts that for a random variable X that follows a normal distribution with a mean of and a standard deviation of
, the sampling distribution of sample means, when drawn with size n, can be estimated as a normal distribution with a mean of
and a standard deviation of
.
Even if the variable is skewed, as long as n is no less than 30, the Central Limit Theorem still holds.
Population:
Right skewed
Mean $206,274
Standard deviation $37,881.
Sample:
<pbased on="" the="" central="" limit="" theorem="" it="" can="" be="" approximated="" to="" normal.="">Mean $206,274
Standard deviation
So the correct answer is:
(A) Approximately normal with a mean of $206,274 and a standard deviation of $3,788.
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Answer:
Her accumulated earnings for the month total $2208
Step-by-step explanation:
A dental lab technician receives $14 hourly for day shifts and $18 hourly for night shifts.
During one month:
She completed six 4-hour day shifts
Thus, total hours worked =
Three 8-hour day shifts =
Three 10-hour day shifts =
Total day hours = 24+24+30=78 hours
Hourly rate for daytime work = $14
Cost for 78 day hours =
Five 6-hour night shifts=
Four 8-hour night shifts =
Total night hours = 30+32=62 hours
Hourly rate for nighttime work = $18
Cost of 62 night hours =
Thus, total monthly earnings = $1092+$1116 = $2208
Consequently, her total pay for the month amounts to $2208