What is the z-score with a confidence level of 95% when finding the margin of error for the mean of a normally distributed population from a sample?
O 099
O 1.65
O 1.96
258
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Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Multiply and simplify. 2x^2 y^3 z^2 · 4xy^4 x^2 i will mark you brainliest if right. show how you got the answer, !