A certain cubical dice was thrown 9000 times and 5 or 6 was obtained 3240 times. On the assumption of certain throwing , do the data indicate an unbiased dice.Test the null hypothesis is accepted or not?
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Assume that on an average one telephone number out of fifteen is busy. What is the probability that if six randomly selected telephone numbers are called: (1) not more than three will be busy? (2) at least three of them will be ...
The median and Mode of the following marks are known to be 33.5 and 34 respectively. However , three frequencies are missing. Determine their values. Marks: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Total No. of students: 4 16 ? ? ? 6 4 230
Q. 4 Fit a Binomial Distribution to the following frequency data : x: 0 1 3 4 f: 28 62 10 4
Q. 3. Consider the following data: X: 0-10 10-20 20-30 30-40 40-50 f: 12 18 20 25 23 Compute mean and median .
Q. 3. Consider the following data: X: 0-10 10-20 20-30 30-40 40-50 f: 12 18 20 25 23 Compute mean and median .