A retailer would like to know if the amount of time a customer spends online has an effect on the amount of money spent by the customer. The below has information on randomly selected customers who made an online purchase. The information contained below includes the amount of time each customer spent viewing items on the website (in minutes) and the dollar amount of their purchase.

1. Based on this data, how much of the variation in the dependent variable can be explained by the explanatory variable?

2. What is the point estimate of the dollar amount of purchase, if the customer stays and browses for 15 minutes? Calculate this point estimate using the actual values obtained in your analysis and not the rounded values used to answer the previous question.

Time (Minutes)	Purchases ($)
18	61.57
18	73.57
34	84.65
13	68.17
20	69.33
29	85.25
33	87.77
22	79.09
37	88.29
27	82.49
26	72.61
22	75.09
28	75.37
30	76.13
17	63.69
19	62.45
20	68.33
31	74.01
34	76.65
28	75.37
16	69.81
28	71.37
19	63.45
27	77.49
33	76.77
32	73.89
14	57.05
21	74.21
13	69.17
38	83.17
33	77.77
29	72.25
15	60.93
38	83.17
31	72.01
14	67.05
32	74.89
13	71.17
25	69.73
23	64.97
29	78.25
36	81.41
32	81.89
21	70.21
19	72.45
13	62.17
14	63.05
14	72.05
14	60.05
36	77.41
32	77.89
25	75.73
33	80.77
18	68.57
28	74.37
34	76.65
34	76.65
36	85.41
35	78.53
19	68.45
25	73.73
13	70.17
32	81.89
36	77.41
26	80.61
35	88.53
18	69.57
36	76.41
33	75.77
15	69.93
36	91.41
27	75.49
37	91.29
21	74.21
32	77.89
38	84.17
26	80.61
24	68.85
36	81.41
24	78.85
18	61.57
34	84.65
18	75.57
22	68.09
28	83.37
20	71.33
19	63.45
33	75.77
21	73.21
22	78.09
13	58.17
18	61.57
24	75.85
33	77.77
33	76.77
38	92.17
31	85.01
23	70.97
35	89.53
21	73.21
32	75.89
31	85.01
37	89.29
17	66.69
15	64.93
31	76.01
21	74.21
16	70.81
34	88.65
24	67.85
14	64.05
27	81.49
30	79.13
32	73.89
34	78.65
37	88.29
16	73.81
19	73.45
30	85.13
28	73.37
23	76.97
38	81.17
21	67.21
13	63.17
27	78.49
19	68.45
23	77.97
24	66.85
27	81.49
19	66.45
36	77.41
16	59.81
33	79.77
21	69.21
25	67.73
23	65.97
20	73.33
25	80.73
26	71.61
16	73.81
19	63.45
35	78.53
14	66.05
26	73.61
28	79.37
25	75.73
27	69.49
24	73.85
37	91.29
26	82.61