The air temperature, T , is related to the number of times, N , that a cricket chirps in a minute. The equation for that relationship is T=40 +1/4 N, where T is measured in degrees Fahrenheit. When the number of cricket chirps per minute increases by 20, , by how much has the temperature changed?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Multiply and simplify. 2x2y3z2 · 4xy4x2 how to do?

The null and alternate hypotheses are: h0: μ1 ≤ μ2 h1: μ1 > μ2 a random sample of 22 items from the first population showed a mean of 113 and a standard deviation of 12. a sample of 16 items for the second population showed a mean of 99 and a standard deviation of 6. use the 0.01 significant level. find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) state the decision rule for 0.010 significance level. (round your answer to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? use the 0.01 significance level.