how many milliliters of 2.0 M kbr must be diluted to make 250 ml of 0.5 M Kbr?
Eight coins are tossed at a time,256 times Number of heads observed at each throw is recorded and the results are given below. Find the expected frequencies What are the theoretical values of main and standard deviation? Calculate also the mean the S.D. of the observed frequen...
The diameter of a ball bearing is to have an average of 2.0 Cm. A random sample of 10 bearings is selected every hour to check the diameters. The sample selected at 9 a.m. gave the following measurements: 2.02, 2.04, 2.00, 1.98, 1.98, 2.04, 2.04, 2.00, 2.02, 1.96. Calculate th...
cotxxot2x -cot2xcot3x - cot3xcotx =?? plese help ME
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