Question

A horticulturist is studying the relationship between tomato plant height and fertilizer amount. Thirty tomato plants grown in similar conditions were subjected to various amounts of fertilizer (in ounces) over a four-month period, and then their heights (in inches) were measured. [You may find it useful to reference the t table.] Click here for the Excel Data File

Fertilizer (ounces)	Height (inches)
1.9	20.4
3.0	49.4
4.3	56.7
1.3	24.3
4.5	29.6
5.3	60.8
3.3	24.6
1.0	25.7
2.6	26
2.4	25.8
0.8	26.2
3.0	28.8
4.3	62.8
3.8	30.1
5.6	43.1
2.6	33.1
4.0	35.2
1.4	22.4
3.5	40.4
6.0	44.2
3.5	29.6
0.5	21.3
1.6	25.7
2.3	29.7
4.6	27.5
3.6	32.5
3.0	33.2
1.0	22.8
2.6	27.3
3.6	46.7

a. Estimate: Heightˆ = β0 + β1 Fertilizer + ε. (Round your answers to 2 decimal places.)

b-2. Calculate the value of the test statistic. (Round intermediate calculations to at least 4 decimal places and final answer to 3 decimal places.)

Answer 1