The Gray isn't interests example that most students are required to take upon entering graduate school in 2014 the combined sources for a variable and quantitative section to approximately normally distributed with a mean of 310 and a standard deviation of 12 What percents of squares where between 286 and 322

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step-by-step explanation:

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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step-by-step explanation: