. Han writes a different computer program to simulate redistributing the data into different groups 500 times and examines the list of the difference of means for each simulation. He finds that the mean of the differences found from the simulation is 0.006 grams and the standard deviation is 0.182 grams. Han then models the simulation differences with a normal distribution and finds that the area under the normal curve greater than 0.19 grams is 0.156 and the area less than -0.19 grams under the normal curve is 0.156. Based on this analysis, Han concludes that there is enough evidence to conclude that the difference in means is due to the batteries having lost charge

The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42