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Gerber Biotech Industries was testing three different drugs namely Breath-Easy, Fresh Mint and Sober Breath, meant for neutralizing the alcohol content in the breath so that the (drunken) drivers can pass the breath analyzer test. The three drugs are tested on randomly selected volunteers and the time taken for each of the drugs to neutralize the effect is recorded. Breath-Easy and Fresh Mint were tested on 8 individuals. The data is presented in the table below:
Volunteer NumberDrug 1 2 3 4 5 6 7 8Time Taken in MinutesBE 35 51 56 57 60 74FM 43 53 41 57 36 55SB 35 32 28 44 40 34 73 48
(a) Test whether there is any significant difference between the average time taken by the three drugs using an appropriate parametric test (Use 0.10 percent significance level)
(b) Repeat the test using an appropriate non-parametric test.
(C) Should the conclusions between the two tests consistent? Why or why not? If the conclusions are not consistent, which one would you agree with and why?
which is preferable as a graphical display for a large quantitative data set a histogram or a stem-and-leaf diagram?
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Set up hypothesis and two-tailed decision rule for right mean using 5% level of significance. Hypothesis for a two-tailed decision is?
raquet brand sample size sample mean sample st. deviationprince 150 980 1.5head 150 1005 21. does the data provide
This problem relates to Basic Statistics and it is about a study on accidents occurring due to driving and drinking. The proportion of drunken driving with single vehicle has been calculated. What proportion of accidents involved alcohol and a sing..
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The Web-based company Oh Baby! Gifts has a goal of processing 95 percent of its orders on the same day they are received. If 485 out of the next 500 orders are processed on the same day
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At the 5% significance level, can the station conclude that the mean age of its listeners is not 25 yrs. Formulate and test the appropriate hypotheses. Use the critical value approach.
suppose you are given data from a survey showing the iq of each person interviewed and the iq of his or her mother.
The adult books 20 are nonfiction and of the children's books 103 are nonfiction.if a book is selected at random, find the probability that it will be fiction.
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