Mathematics, 16.05.2021 01:50 angie7665
An experiment is proposed to measure the effectiveness of a brand of sunscreen. Adult volunteers are randomly assigned to one of two brands of sunscreen and asked to enjoy a normal day at the beach. Each volunteer is asked to report back to the administrators after two hours, at which time both arms are assessed for sun exposure.
Which statement describing this experiment is true?
The volunteers are the explanatory variables.
The brands of sunscreen are the response variables.
The amount of time in the sun is the response variable.
The brands of sunscreen are the explanatory variables.
Answers: 1
Mathematics, 21.06.2019 23:30
Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.
Answers: 1
Mathematics, 22.06.2019 03:30
Y< 2x-3 y? mx+3 which value of m and which symbol result in the system of inequalities shown above having no solution? a) m=-2; > b) m=-1/2; < c) m=2; > d) m=2;
Answers: 3
Mathematics, 22.06.2019 04:30
Write the fraction for the part that is shaded. then find the equivalent fraction.
Answers: 1
An experiment is proposed to measure the effectiveness of a brand of sunscreen. Adult volunteers are...
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