A researcher wants to conduct a study to determine whether a newly developed antidrug program is successful. Two randomly selected groups of 250 students each, identified as control and treatment groups, are formed from the 500 students accused of using drugs. Both groups receive a set of antidrug materials and a lecture from a teacher and an ex-drug user about the dangers of drug use. In addition, the treatment group also receives materials from the newly developed program. One hundred forty-eight of the 250 students in the control and 175 of the 250 students in the treatment group no longer use drugs is recorded 9 months later. Use the results to test the hypotheses H0: P1 = P2 and Ha: P1 * P2 where P1 represents the proportion of students who succeed in the control program and p2 represents the proportion of students who succeed in the newly developed program.

What can you conclude using the significance level a = 0.05?

The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately bell-shaped. compare the z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the z-scores for each. best actor: z equals best supporting actor: z equals (round to two decimal places as needed.) interpret the z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the mean, which (is is not) unusual.

Identify the number 127 as a rational or irrational. explain

Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above