The ratio of total studentsin ms. murrays class to students in the class who have an older brother is 3 to 1.the answer is 1: 2.qhat is the question

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?