In a study, a random sample of 260 female students on wayne state campus were surveyed and a random sample of 245 male students were also surveyed and. on the survey, students rated (on a 7-point scale) whether they thought animal research is wrong. the average for the female students was 5.353 and the average for the male students was 3.882. suppose it is known that the standard deviation for female students is 1.656 and the standard deviation for male students is 1.728, construct and interpret a 99% confidence interval for the true difference in average ratings for female and male students at wayne state university. (round to three decimal places if necessary.)

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Select the lengths in centimeters that would form a right triangle