Math diagnostic test 4

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare proportions.

Front

Convert 9.17% to decimal form.

Back

0.0917

Front

What is the derivative of y = 2cos(3x)?

Back

dy/dx = -6sin(x)

Front

Solve for x: 3x - 5 = 7.

Back

x = 4

Front

What is a z-score?

Back

A z-score indicates how many standard deviations an element is from the mean.

Front

If a z-score is 2.13 and x is 9.12, what is the standard deviation if the mean is 7.49?

Back

0.77

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Front

What is the probability of getting an 'A' in one class if the probability is 0.35?

Back

0.35

Front

What is the probability of getting an 'A' in all four classes if the probability is 0.35 for each class?

Back

0.015 (0.35^4)

Front

What does dy/dx represent in calculus?

Back

dy/dx represents the derivative of y with respect to x, indicating the rate of change of y as x changes.