Which model is most appropriate for the data shown in the graph below?
2 answers:
Answer : Exponential
The graph is attached below with dots
When we connect all the dots then we will get a curve shaped graph.
a). quadratic - A U shaped figure is quadratic. It is in the form of parabola.
b). linear - Line graph is linear. It is a straight line.
c). exponential - A curve shaped graph is exponential. Like half of a parabola.
d). line - Straight line graph.
By connecting all the dots we got a curve shaped graph. so its exponential.
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In this problem, the given values are:
x = average = 30.4
s = standard deviation = 7.1
n = number of samples = 25
Degrees of freedom = n -1 =24
Using the t-distribution table for a normal curve at 90% CI, we get t-crit:
t-crit = 1.711
Now the Margin of Error (E) is calculated as:
E = t-crit*(s/ )
By substituting the known values into the equation:
E = 1.711 * (7.1/ )
E = +- 4.30
Therefore, the margin of error is 4.36. Hence, the commute time is between 26.1 minutes and 34.7 minutes.
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