A study was done to determine the effect of the MECLR (methanol extract of C lut

Question

A study was done to determine the effect of the MECLR (methanol extract of C lutea) on the mating habits of rabbits.

Twenty male rabbits were randomly assigned to one of four groups:

Control: no MECLR or sildenafil citrate
40 mg/kg body weight of MECLR
80 mg/kg body weight of MECLR
0.5 mg/kg body weight of sildenafil citrate

The next day, each male was paired with a female rabbit, and the number of times the male tried to mount the female (“mounting frequency”) was recorded. The results are as follows:

Control rabbits: 2, 3, 3, 3, 3
40 mg/kg MECLR: 4, 5, 5, 5, 6
80 mg/kg MECLR: 6, 6, 7, 8, 8
0.5 mg/kg sildenafil: 8, 9, 11, 11, 11

Is the relationship between “mounting frequency” and “dosage of MECLR” statistically significant?

A. No, T = 0.21

B. Yes, T = 6.85

C. Yes, T = 9.16

D. Yes, T = 9.57

E. Yes, T = 83.9

Explanation / Answer

Answer is No, T =0.2064

SUMMARY OUTPUT Regression Statistics Multiple R 0.048601 R Square 0.002362 Adjusted R Square -0.05306 Standard Error 34.80048 Observations 20 ANOVA df SS MS F Significance F Regression 1 51.61244 51.61244 0.042617 0.838765 Residual 18 21799.33 1211.074 Total 19 21850.94 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 26.54961 18.98718 1.398292 0.179018 -13.341 66.44019 X Variable 1 0.576675 2.79344 0.206439 0.838765 -5.29213 6.445476

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