In a Z-test, the number of degrees of freedom isAnone of theseB1C) n-1D n-2 For a random sample of 9 women, the average resting pulserate is = 76 beats per minute, and the sample standarddeviation is s = 4. The standard error of the sample mean isA0.1333B0.1667C0.3333D0.6667

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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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r items 12-15, refer to the problem below: Mr. Bautista asserts that fewer than 5% of the bulbs that he sells are defective. Suppose 100 bulbs are randomly selected, each are tested, and 2 defective bulbs are found. Does this provide sufficient evidence for Mr. Bautista that the fraction of defective bulbs is less than 0.05. Use a = 0.05. 12. What is the null and alternative hypothesis in the problem? A. Ho: p = 0.05 Ha:p#0.05 B. Ho: p = 0.05 Ha:ps 0.05 C. Ho:p = 0.05 Haip 0.05 %3D %3D 13. Compute the test statistic value. A. - 2.15 B.- 2.14 C. - 1.38 D. - 1.37 14. Determine the critical value. A. - 1.96 B. 1.96 C. - 1.645 D. 1.645 15. Base on the computed test statistic value and the critical value, is Mr. Bautista correct from his assertion that fewer than 5% of the bulbs that he sells are defective? A. Yes B. No C. Undecided D. Cannot be determined
The data represent the results for a test for a certain disease. Assumeone individual from the group is randomly selected. The individual did have The individual did not the disease have the diseasePositive 457 24Negative 78 341a. Find the probability of getting someone who tested positive,given that he or she did not have the disease. Round your answer tofour decimal places. Don’t forget to show your work.b. Find the probability of getting someone who tested negative,given that he or she did have the disease. Round your answer to fourdecimal places. Don’t forget to show your work
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A с B AG BG CG DG D AB BB CB DB Blue AR BR CR DR Red A person spins both of the spinners below. (Assume they are equally sp 1. What is the sample space? AB AY BB BY CB CY DB DY 2. What is the size of the sample space? 3. What is the probability of spinning "Blue" or "C"? Yellow 4. What is the probability of spinning "Blue" and "C"? Blue Green dec
The degrees of freedom (df) for the One Sample t test and the Independent Sample t test are _________. a. One Sample t test: N-1 Independent Samples t test: N-1 b. One Sample t test: N Independent Samples t test: N-1 c. One Sample t test: N-1 Independent Samples t test: N-2 d. One Sample t test: N-2 Independent Samples t test: N-1
Which of the following can be represented by a discrete random variable? Multiple Choice The circumference of a randomly generated circle The time of a flight between Chicago and New York The number of defective light bulbs in a sample of five The average distance achieved in a series of long jumps
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In a business, the Chief Executive Officer wants to know if his workers are for or against mandatory vaccinations. A random sample of 200 workers was taken and the results are shown in the MINITAB output below Expected counts are printed below observed counts Managers Team leaders Employees Total 17 22 15 Approve 21.330 17.820 14.850 54 34 25 14 Against 28.835 24.090 20.075 73 28 19 26 No Opinion 28.835 24.090 20.075 73 Total 79 66 55 200 Chi-sq = 0.878992 + 0.980494 + 0.001515 + 0.925168+ 0.034375 + 1.838387 + 0.02418 + 1.075471 + 1.74874 =7.507306
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Use the table below for groups of 8 births from 8 different sets of parents. Number of girls, x P(x) 0 0.004 1 0.031 2 0.109 3 0.219 4 0.273 5 0.219 6 0.109 7 0.031 8 0.004 Find the probability of getting exactly 7 girls in 8 births.
For a binomial experiment with n trials, let p = probability of success, q = probability of failure, and x = number of successes in n trials. Which of the following statements is %3D correct? Op+q= 1 Ox
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In a Z-test, the number of degrees of freedom is A none of these B 1 C) n-1 D n-2