A medical researcher designs a drug to treat high blood pressure. She believes that people of different genders may respond differently to the new drug. What type of sample should be utilized to control for the possibility of different reactions based on gender? A. stratified random sample
B. systematic sample
C. self-selecting sample
D. random sample

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

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