The null and alternate hypotheses are: h0 : μ1 = μ2h1 : μ1 ≠ μ2a random sample of 12 observations from one population revealed a sample mean of 25 and a sample standard deviation of 3.5. a random sample of 9 observations from another population revealed a sample mean of 30 and a sample standard deviation of 3.5.at the 0.01 significance level, is there a difference between the population means? state the decision rule.
a. state the decision rule. b. compute the pooled estimate of the population variance. c. compute the test statisticd. state your decision about the null hypothesis. e. the p-value is
y = -4
we are given the following equation and we are to find the value of y when x equals to 1:
substituting the given value of x in the above equation:
therefore, y = -4 when x = 1.
to find a side length of similar triangles, write two equal ratios and set them equal in a proportion. the ratios should be written using the side lengths in each triangle which correspond to each other.
this proportion compares the short side of the largest triangle to its hypotenuse and compares the short side of the smallest triangle to its hypotenuse. to solve for x, cross multiply by multiplying numerator and denominator.