A couple purchased a home 20 years ago for $65,000 . The home was financed by paying 20 % down and signing a 30-year mortgage at 8 % on the unpaid balance. The net market value of the house is now $130,000 , and the couple wishes to sell the house. How much equity (to the nearest dollar) does the couple have in the house now after making 240 monthly payments?
A couple purchased a home 20 years ago for $65,000 . The home was financed by paying 20 % down and signing a 30-year mortgage at 8 % on the unpaid balance. The net market value of the house is now $130,000 , and the couple wishes to sell the house. How much equity (to the nearest dollar) does the couple have in the house now after making 240 monthly payments?
Solution Summary: The author calculates the equity couple have in the house after making 240 monthly payments for it purchased 20 years ago.
A couple purchased a home
20
years ago for
$65,000
. The home was financed by paying
20
%
down and signing a 30-year mortgage at
8
%
on the unpaid balance. The net market value of the house is now
$130,000
, and the couple wishes to sell the house. How much equity (to the nearest dollar) does the couple have in the house now after making 240 monthly payments?
Example 4 (Part 2) We can use Statkey to take 50 different random samples of size 20 each, find the mean of
each sample, and compute a confidence interval for each one. The graph of the sampling distribution of the means
is on the left below, and that of the 50 confidence intervals is on the right.
1. What does each dot on the left hand dotplot represent?
StatKey Sampling Distribution for a Mean
Percent with Internet Access (Countries) ▾
Show Data Table Edit Data
Choose samples of size n =
20
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Change Column(s)
Generate 1 Sample
Generate 10 Samples
Generate 100 Samples
Generate 1000 Samples
Reset Plot
Sampling Dotplot of Mean
Left Tail Two-Tail Right Tail
60
50
40
40
30
20
20
10
samples = 50
mean = 41.626
std. error = 5.089
:
.:
:
::
0
25
30
35
40
45
50
55
60
41.626
Data Plots
Confidence Intervals
95%->
Confidence Intervals
Coverage
48/50 = 96%
20
40
60
80
2. Circle the confidence intervals that failed to capture the true mean.
3. Circle the sample means that produced those…
Can you prove by induction on n for the following
Chapter 3 Solutions
Finite Mathematics for Business, Economics, Life Sciences and Social Sciences
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