A class of students took a Geography test. The results are represented by a box-and-whisker plot, as shown below. The maximum mark of the test is 40. Marks 40 20 30 Find ) the median mark, (ii) the range, (ii) the interquartile range.

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A: From given stem and leaf plot the data set forOffer is 32,32,39,41,42,45,46,47,47,52,54,54,54,57,57,...

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Q: How many permutations are there of all the letters in the word STARBUCK if:

A: Here use total arrangement 

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A: Here for t distribution 

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Q: it be appropriate to use a normal distribution to approxi- mate the binomial distribution?

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A: Here given unfair coin tossed 4 times P= probability of head =0.75

Q: The upper limit of the 95% confidence interval is (rounded) O 73 O71 O 72 O74

A: