(1) Use Chebyshev’s theorem to find what percent of the values will fall between 206 and 296 for a data set with a mean of 251 and standard deviation of 15(2) Use the Empirical Rule to find what two values 68% of the data will fall between for a data set with a mean of 293 and standard deviation of 19(3) Nine college students had eaten the following number of times at a fast food restaurant for dinner in the last ten days: 4, 10, 1, 7, 1, 8, 1, 5, 2 Find the mean, median, mode, range, and midrange for these data.(4) A Math test has a mean of 51 and standard deviation of 5.0. Find the corresponding z scores for: I. a test score of 64 II. a test score of 47 (5) Rank the following data in increasing order and find the position and value of the 58th percentile. Please show all of your work. 5 5 1 3 8 7 7 7 0 0 9 8(6) The following data lists the average monthly snowfall for January in 15 cities around the US: 13 12 24 44 32 28 12 1739 47 11 33 45 17 22 Find the mean, variance, and standard deviation. (7) Starting with the data values 70 and 100, add three data values to the sample so that the mean is 79, the median is 80, and the mode is 80. Please show all of your work.
Hi,When do you need them ?Steve
As soon as possible I need to use these to study and review for my test in a couple of hours and the teacher says the test will be based off this homework so If I can do this I should have no problem with the test but If my answers are wrong it wont help me review for test so I am asking for your help
Ok,I am working on them nowFor question 5) some thextbooks differ in the formula to find the percentilesIf you have that formula it would be greatSteve
My book list a couple also but the one in this chapter has p/100 * (n + 1) Im not sure if this was the formula you were looking for
That´s the beginning of the process, after computing that value it must be another stepCan you post it here?Steve
Chapter 4 it gives me this (B+0.5E)/ n * 100= percentile
Where B = number of scores below xE = number of scores equal to xn = number of scores
Ok,Finishing the questions nowSteve
That formula give us p(percentile) for a given value of xBut in question 5) we need to know x given pI think that the first formula you posted is useful , but after that you have to round or doing something with:p/100 * (n + 1)Can you check that ?Steve
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I teach Calculus and Probability in a University since 1994