A randomized study compared the effectiveness of two mosquito repellents. The treatment group using Spray A reported a mean of 3.5 mosquito bites. The treatment group using Spray B reported a mean of 5.6 mosquito bites.

To determine if the results are significant, the data are re-randomized and the differences of the means are shown in the dot plot.

What is the best conclusion to make based on the data?

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

the answer is d

step-by-step explanation:

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33