Is an unbiased estimator of the variance σ2. In other words, E(s2) = σ2. Is s = √s2 an unbiased estimator of the standard deviation σ? If not, does s tend to underestimate or overestimate the standard deviation? Hint: Very little computation is needed. Start by writing the formula for computing the variance of s.

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?