Exam 9: Discrete Mathematics

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Construct a boxplot for the data.

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Construct a boxplot for the data.

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Two dice are rolled. Find the probability of rolling a sum greater than 8.

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Prove the following statement by mathematical induction: 3+7+11++(4n1)=n(2n+1)3+7+11+\cdots+(4 n-1)=n(2 n+1)

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Twenty-four students participated in a basketball contest. Each student took five shots. The number of baskets scored by each student is shown below. Find the mean, median, and mode for the data. 4 3 3 4 5 3 2 3 2 5 5 5 1 2 5 3 3 4 0 2 5 1 3 5

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How many different groups of officers - president, vice-president, treasurer, and secretary - can be formed from an organization with 35 members?

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Do the following sequences converge or diverge? If they converge, state the limit. (a) {5n2n+1}\left\{\frac{5 n}{2 n+1}\right\} (b) {n3+12n+1}\left\{\frac{n^{3}+1}{2 n+1}\right\} (c) {3n34n5+1}\left\{\frac{3 n^{3}}{4 n^{5}+1}\right\}

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A computer randomly selects a number from 1 through 50 . Two selections are made by the computer to create an ordered pair of numbers. How many elements are in the sample space for this experiment?

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Sally deposits $100 \$ 100 at the end of each month into an account that pays 6% 6 \% annual interest compounded monthly. After 5 years of deposits, what is the account balance?

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Determine whether the infinite geometric series converges. If it does converge, what is the sum? 53+59+527+\frac{5}{3}+\frac{5}{9}+\frac{5}{27}+\ldots

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The third and fifth terms of an arithmetic sequence are 2 and 32, respectively. Find explicit and recursive formulas for the sequence.

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Find the mean, median, and variance. If necessary, round to the nearest hundredth.

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Use the formulas k=1nk=n(n+1)2\sum_{k=1}^{n} k=\frac{n(n+1)}{2} and k=1nk2=n(n+1)(2n+1)6\sum_{k=1}^{n} k^{2}=\frac{n(n+1)(2 n+1)}{6} of n . k=1n(4k2+2k9)\sum_{k=1}^{n}\left(4 k^{2}+2 k-9\right)

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The sequence 25,21,17,13, \ldots is arithmetic. (a) What is the common difference of the sequence? (b) What is a recursive rule for the nth term (n2)(n \geq 2) of the sequence?

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What is the probability of obtaining exactly four heads in eleven tosses of a fair coin?

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Find the five-number summary and the range for the data in the stemplot below. Stem Leaf 3 556 4 23368 5 235567 6 3444556 7 23455677

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A magazine includes an insert in its January issue that asks readers to answer questions about the magazine's new cover design and layout and return the insert in the mail. Will this sample suffer any biases? A magazine includes an insert in its January issue that asks readers to answer questions about the magazine's new cover design and layout and return the insert in the mail. Will this sample suffer any biases?

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Is negative association the same as negative correlation?

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Find the sum of the first 12 terms of the arithmetic sequence: 28,22,16,10, ....

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Determine the sixth partial sum of the geometric sequence 5,54,516,5, \frac{5}{4}, \frac{5}{16}, \ldots

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