Question

A researcher collected data on the height (cm) of eight legume plants and the number of flowers on the plant one week after flowering began.

Height (x)		24	26	28		30	32		34		37	39
Number of Flowers (y)		15	21	17		16	20		14		11	19
SUMMARY OUTPUT
Regression Statistics
Multiple R	0.247
R Square	0.061
Adjusted R Square	-0.096
Standard Error	3.492
Observations	8
ANOVA
	df				SS			MS		F			Significance F
Regression	1				4.73			4.73		0.388			0.556
Residual	6				73.15			12.19
Total	7				77.88
	Coefficients				Standard Error			t Stat		P-value			Lower 95%		Upper 95%
Intercept	21.51				7.94			2.71		0.035			2.081		40.940
X Variable 1	-0.156				0.251			-0.62		0.556			-0.770		0.458

At the 5% significance level, test that the slope (B) is negative. What is the test statistic and what is your conclusion?

a. Do not reject the null hypothesis, slope is equal to 0.

b. Reject the null hypothesis, slope is equal to 0.

c. Do not reject the null hypothesis, slope is negative

d. Reject the null hypothesis, slope is negative.

Answer 1