1. The following are data for 12 individual’s daily sodium intake and their systolic blood pressure readings. Person Sodium BP XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX...

1. The following are data for 12 individual’s daily sodium intake and their systolic blood pressure readings.

Person Sodium BP
1 6.8 154
2 7.0 167
3 6.9 162
4 7.2 175
5 7.3 190
6 7.0 158
7 7.0 166
8 7.5 195
9 7.3 189
10 7.1 186
11 6.5 148
12 6.4 140

A researcher investigator is interested in learning how strong the association is between these variables and how well we can predict blood pressure from sodium intake.

a. Calculate the value of r and the regression equation for the data.
b. Test the hypothesis at 0.05 level of significance.
c. What would be a likely blood pressure for a person with sodium of 6.3? How about sodium of 7.6?