Example 14.7 The following represent the number of units of production per day turned out by fourdifferent workers using five different types of machines:Machine TypeWorkerAВDETotal1437.625277428376788.36434.822Total1923212721111On the basis of this information, can it be concluded that (i) the mean productivity is the same fordifferent machines, (ii) the workers don't differ with regard to productivity?

Answered: Image /qna-images/answer/2de2eaad-d3b8-42db-8912-f7610440a71d.jpg

Answered: Example 14.7 The following represent…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. A consumer agency wanted to find out of the mean time taken by each of three brands of medicines to provide relief from a headache is the same. The first drug was administered to six randomly selected patients, the second to four randomly selected patients, and the third to five randomly selected patients. The following table gives the time (in minutes) taken by each patient to get relief from a headache after taking the medicine. Drug I 25 38 42 65 47 52 Drug II 15 21 19 25 Drug III 44 39 54 58 73 At a 2.5 % significance level, will you conclude that the mean time taken to provide relief from a headache is the same for each of the three drugs? Use the Critical Value Approach
(a) Compute SST, SSR, and SSE. Recall that SST is the total sum of squares and is calculated as below where y; is the ith observed value of the dependent variable and y is the mean value for the dependent variable. SST = The given data follow where x represents the years of experience and y represents the annual sales ($1,000s). Years of Annual Sales Salesperson Experience ($1,000s) 1 1 180 2 214 3 4 214 4 4 224 5 226 8 222 7 10 258 8 10 256 11 274 10 13 292 First find y. 180 + 214 + 214 + + 292
Can you answer number 16 please
3. A psychologist is studying the effects of lack of sleep on the performance of various perceptual-motor tasks. After a given period of sleep deprivation, a measurement of reaction time to an auditory stimulus was taken for each of 36 adult male subjects. The reaction times (in seconds) are summarized as follows: x = 1.82, s = 0.22 Previous psychological studies show that the true mean reaction time for non-sleep- deprived male subjects is 1.70 seconds. a. Does the sample evidence indicate that the mean reaction time for sleep- deprived male subjects is longer than that of non-sleep-deprived male subjects ? a = 0.05 (iv) The conclusion for the above problem is Do not reject the null hypothesis and mean reaction time for sleep-deprived male subjects is not longer than that of non-sleep-deprived male subjects Reject the null hypothesis and mean reaction time for sleep-deprived male subjects is longer than that of non-sleep-deprived male subjects Do not reject the null hypothesis and…
4. The following data represent the operating times in hours for three types of scientific pocket calculators before recharge is required | 4.3 6.2 |5.6 Use a 0.05 level of significance, to test the hypothesis that the operating times for all three 4.9 5.5 |6.4 Calculator A 6.1 4.6 5.3 Calculator B 5.4 5.8 5.5 6.3 5.2 4.8 Calculator C 6.8 6.5 6.6 calculators are equal.
How do I Compute Pearson’s r for the following set of data: Subject Age x Glucose Level y 1 43 99 2 21 65 3 25 79 4 42 75 5 57 87 6 59 81
5. An article in Agricultural Engineering (December 1964, pp. 672-673) described an experiment in which the daily weight gain of swine is evaluated at different levels of housing temperature. The mean weight of each group of swine at the start of the experiment is considered to be a nuisance factor. The data from this experiment are as follows: Mean Weight (lbs) Housing Air Temperatures (°F) 100 50 60 70 80 90 1.37 1.58 2.00 1.97 1.40 100 0.39 150 1.47 1.75 2.16 1.82 1.14 -0.19 200 1.19 1.91 2.22 1.67 0.88 -0.77 Does housing air temperature affect mean weight gain at a = 0.05?

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