Answer:
180 = (7x +5)+(3x -5 ) + 90
180 = 10x +90
10x = 90
x= 9
Answer:
No, This is not reasonable estimate.
Step-by-step explanation:
Charles wants to take out a 5 year loan on car that cost $15000.
He make rough estimate to make payment. He can afford to pay up to $200 per month.
First we find total number of months in 5 years.
Total months = 5x12= 60 months
Total estimate to pay = =$12000
we can see cost of a car $15,000 is greater than his estimation $12,000.
Therefore, Charles estimation will not work.
No, This is not reasonable estimate.
25x+30x= 1625
x+y= 60
Put into calculator and you get
x=35 y=25
Answer:
Step-by-step explanation:
In Statistitics whenever we test a hypothesis for testing a statistic, we use confidence interval.
Confidence interval is on either side of an assumed value a margin of error
Margin of error is calculated as critical value * sigma/sqrt of n
Thus we find that whenever n increases, margin of error decreases, thus making confidence interval narrower and thus making probability for accepting null hypothesis a less value.
Thus we find that option C is right.
C. Increasing the sample size decreases the probability because σx decreases as n increases.
Answer & Step-by-step explanation:
Add 1 to both sides.
Multiply both sides by 4.
Take the square root of both sides.
Subtract 5 from both sides.