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Mathematics, 21.02.2020 17:45 stussy44
Researchers asked each child in a sample of 411 school-age children if they were more or less likely to purchase a lottery ticket at a store if lottery tickets were visible on the counter. The percentage that said that they were more likely to purchase a ticket by grade level are as follows (R&J Child Development Consultants, Quebec, 2001):
Grade Percentage That Said They
Were More Likely to Purchase
6 32.7
8 46.1
10 75.0
12 83.6
a. Construct a scatterplot of y = percentage who said
they were more likely to purchase and x = grade. Does
there appear to be a linear relationship between x and y?
b. Find the equation of the least-squares line
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Researchers asked each child in a sample of 411 school-age children if they were more or less likely...
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