Answers to questions

Answers to questions
Part 1:
Obtaining the monthly payments
The value of the monthly payments is obtained using this formula PMT (rate, nper, pv,) where the rate represents the interest rate, per period, nper is the-the number of periods over which the loan is to be paid, and pv is the present value of the loan.
Rate=3%, nper = 5*12=60, and pv= $25000
Answer 1: running the PMT function in Excel yield a monthly payment value of $449.22
Answer 2: the total amount paid in the 60 months =$449.22*60= $26,953.04
The interest paid = $26,953.04-$25000= $1,953.04
Part 2:

Answer 3: the equation of the line is y = 3.2929x – 0.65 comparing this to the standard
y = mx + c, then m = 3.2929
Answer 4: the value of R2 of the accuracy is R2 = 0.9673
Dataset
45 40 43 59 40 39

Answer 5: The count of the population is obtained using the COUNT function in excel.
Count = 6
Answer 6: the average of the data is obtained using the AVERAGE function in Excel.
Average = 44.33333333
Answer 7: the standard deviation of the data set is obtained using the STDEV function in Excel
The standard deviation = 7.527726527

Answer 8: between time t = 0 and time t = 25 the velocity is constant. The distance is changing in the same amount for a given amount of time.
Answer 9: the velocity is changing during interval t = 25 and t = 35 and also during interval t = 40 and t = 50 sec
Answer 10: the interval at which velocity is zero is between t = 35 and t = 40 where the object is stationary thus not moving.

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