Anational manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. it is important that the diameters be as close as possible to an industry standard. the output from each process is sampled and the average error from the industry standard is measured in millimeters. the researcher is interested in determining whether there is evidence that process b yields higher average errors than process a. the population standard deviations are unknown but assumed equal. if we test the null hypothesis at the .05 level of significance, what is the decision? the results are presented next.

Asquare has a perimeter of sixteen centimeters. what is the length of each of its sides? a. 8 cm c. 9 cm b. 4 cm d. 10 cm select the best answer from the choices

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Ican interpret and represent the remainder in division calculations sensibly for the context (eg if we wont to know how many 40 seat buses will be needed to transport 170 students for on excursion, we divide 170 by 40 and realise buses and another smaller vehicle to that we need 4 transport 10 more students) solve the following questions. show your work! 11) the zoo had 420 butterflies that needed to be transported to a new enclosure. the boxes that the butterflies would be moved in only hold 80 butterflies in each. how many boxes would they need? 2 12) each classroom in the school can have exactly 25 students, if there are 345 students in the school how many full classrooms are there?