An investigator wanted to see whether packaging information affects the way teenagers rate the effectiveness of soap. the same soap was put in three packages: (a) a pink wrapper that says "for keeping your skin baby soft," (b) a red wrapper that says "for eliminating acne," and (c) a white wrapper that says nothing. each teenager was asked to rub his or her face with dirt and wash with soap a; the same procedure was followed for soaps b and then c. the time it took to get the face clean was recorded each time. what factors in addition to the intended independent variable might influence the results?

answer: 34rtyj,jkhtyetwrhyjeuiejnbhdfknbkguxfrbhkfdbjvkmbd,kvbsd.kxjvbhjnfbgjxdfn

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.