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Question 447226: just need some help on these couldn't figure them out at all, thank you
11) How many combinations can be made from selecting 2 brands of soda out of 6? (P. 244)
12) How many permutations are there of the letters in the word SILLY? (P. 238-239)
13) If 4 people can choose from 5 different desserts, how many ways can the desserts be selected if there is NO repetition of the desserts? (P. 229)
14) Calculate the mean AND standard deviation of the random variable shown in the table (P. 344, 347-349).
X Probability
0 0.26
1 0.18
2 0.14
3 0.33
4 0.09
5 0.19
15) 32% of all women will suffer a hip fracture because of osteoporosis by the age of 90. If 6 women aged 90 are randomly selected from a BINOMIAL DISTRIBUTION, find the probability that at least 4 of them will suffer a hip fracture (P. 362).
16) Find the mean and standard deviation of this distribution (P. 372).
Answer by sudhanshu_kmr(1152)   (Show Source):
You can put this solution on YOUR website! 11) How many combinations can be made from selecting 2 brands of soda out of 6?
Number of ways = 6C2 = 15
12) How many permutations are there of the letters in the word SILLY? (P. 238-239)
Number of ways = 5!/2! = 60
13) If 4 people can choose from 5 different desserts, how many ways can the desserts be selected if there is NO repetition of the desserts? (P. 229)
Number of ways = 5P4 = 120
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