Stats Questions

# Stats Questions - 1(TCO D Lightning Labs provides drug...

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1.  (TCO D) Lightning Labs provides drug companies and law enforcement agencies with mitochondrial DNA culturing. They claim they can complete the culturing of a mitochondrial DNA sample in less than 16 hours. You are given the following data from a sample. Sample size: 36 Population standard deviation: .75 Sample mean: 15.23 Formulate a hypothesis test to evaluate this claim.  (Points : 10)          Ho: µ = 16; Ha: µ ≠ 16         Ho: µ ≥ 16; Ha: µ < 16         Ho: µ ≤ 16; Ha: µ > 16         Ho: µ ≥ 15.23; Ha: µ < 15.23 2.  (TCO B) The Republican party is interested in studying the number of republicans that might vote in a particular congressional district. Assume that the number of voters is binomially distributed by party affiliation (either republican or not republican). If 10 people show up at the polls, determine the following: Binomial distribution 10 n 0.5 p X P(X) cumulative probability 0 0.00098 0.00098 1 0.00977 0.01074 2 0.04395 0.05469 3 0.11719 0.17188 4 0.20508 0.37695 5 0.24609 0.62305 6 0.20508 0.82813 7 0.11719 0.94531 8 0.04395 0.98926 9 0.00977 0.99902 10 0.00098 1.00000 What is the probability that no more than four will be republicans?  (Points : 10)          38%         12%         21%         62% 3.  (TCO A) Company ABC had sales per month as listed below. Using the Minitab output given, determine:

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(A)  Range (5 points); (B)  Median (5 points); and (C)  The range of the data that would contain 68% of the results. (5 points). Raw data: sales/month (Millions of \$) 19 34 23 34 56 45 35 36 46 47 19 23 Descriptive Statistics: Sales Variable Total Count Mean StDev Variance Minimum Maximum Range Sales 12 34.75 12.09 146.20 19.00 56.00 37.00 Stem-and-Leaf Display: Sales Stem-and-leaf of Sales N = 12 Leaf Unit = 1.0 2 1 99 4 2 33 4 2 6 3 44 6 3 56 4 4 4 4 567 1 5 1 5 6 (Points : 15)
4.  (TCO C, D) Tesla Motors needs to buy axles for their new car. They are considering using Chris Cross Manufacturing as a vendor. Tesla's requirement is that 95% of the axles are 100 cm ± 2 cm. The

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## This note was uploaded on 02/25/2012 for the course STAT STAT taught by Professor Unknown during the Spring '10 term at DeVry Phoenix.

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Stats Questions - 1(TCO D Lightning Labs provides drug...

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