9 Four Identical Six Sided Dice Each With Faces Marked 1 To 6 Are Rolled 200 Times At Each Rolling A Record Is Made 1 (137.57 KiB) Viewed 80 times
Help with number 9 a and b
9. Four identical six-sided dice, each with faces marked 1 to 6, are rolled 200 times. At each rolling, a record is made of the number of dice whose score on the uppermost face is even. The results are as follows. 0 1 Number of even scores (xi) Frequency (f) 2. 3 4 70 57 22 10 41 (a) Explain why a binomial model is appropriate in describing the distribution of X, number of even scores. (b) Test for goodness of fit of the binomial model.
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