Given that a die is tossed and has the following data :x 1 2 3 4 5 6P(x) 1/6 k1/61/61/6 1/6Choose...Choose... +What is the standard deviation?Choose...Choose..1/62.72.81.641.713.42/62.9173.51.673,3

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Answered: Given that a die is tossed and has the…

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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A random sample of patients visiting a hospital emergency room was obtained and the waiting time of the visitors before they saw the physician were measured. The data (in minutes) are shown below. 54 37 49 28 35 29 47 58 40 45 42 31 52 37 44 41 38 34 35 34 44 41 35 34 42 2 The deviation of the largest observation in the sample from the sample mean is, a 17.76 minutes b 18.50 minutes c 19.27 minutes d 20.07 minutes
Listed in the accompanying table are waiting times (seconds) of observed cars at a Delaware inspection station. The data from two waiting lines are real observations, and the data from the single waiting line are modeled from those real observations. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). One Line Two Lines 64.1 733.6 64.3 865.2 157.2 605.8 215.8 1089.7 142.2 267.8 85.6 662.7 278.9 310.2 339.6 518.1 253.2 128.8 199.5 565.6 475.7 132.9 630.3 268.2 478.2 122.1 333.1 350.4 473.5 128.9 328.9 95.2 402.1 232.7 914.6 99.7 721.6 461.2 552.8 162.7 760.7 482.2 596.7 100.6 692.3 518.1 837.1 508.5 903.1 580.2
Let x be a random variable that represents the commute time of teachers in a large urban area. If x is normally distributed with a mean of 49 minutes and a standard deviation of 5.2 minutes, find the commute time which is at the top of the bottom 10%. A. 55.66 minutes B. 42.34 minutes C. 42.63 minutes D. 41.38 minutes
The lengths of time (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed. Assume the population standard deviation is 6.1 years. At a= 0.02, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years? Complete parts (a) through (e). 20.4 7.1 7.9 18.9 20.2 13.3 8.8 20.4 16.6 19.5 8.8 18.4 17.4 15.7 22.4 17.6 8.7 7.6 20.7 12.7 18.5 15.8 18.6 15.5 21.7 12.2 12.5 10.5 9.8 8.1 15.7 8.1 O A. Ho H>13 (claim) O B. Ho us 13 (claim) H p> 13 C. Ho: =13 (claim) Ha ps 13. Ha: u#13 OD. H, p 13 (claim) H p= 13 OE H, p2 13 (claim) H p13 H us 13 (claim) (b) Identify the standardized test statistic. Use technology. | (Round to two decimal places as needed.)
The lengths of time (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed. Assume the population standard deviation is 6.7 years. At a = 0.01, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 years? Complete parts (a) through (e). 15.2 18.4 18.6 16.2 13.9 7.4 20.3 7.8 7.3 10.2 13.1 19.6 20.5 11.4 10.8 13.8 22.9 12.4 16.9 21.5 8.5 11.8 18.9 11.7 15.7 20.1 16.7 17.9 19.1 10.2 17.6 13.9 FI SIXD (a) Identify the claim and state the null hypothesis and alternative hypothesis. OA. Ho: #13 (claim) 2 B. Ho: 213 (claim) H₂H13 (claim) Hus 13 H₂ = 13 INS OD. Ho: >13 E. Ho: 13 (claim) H₂:13 OF. Hous13 (claim) H₂:μ> 13 H₂: μs 13 (claim) MI (b) Identify the standardized test statistic. Use technology. z= 1.69 (Round to two decimal places as needed.) (c) Find the P-value. Use technology. P= (Round to three decimal places as needed.)
Suppose a random sample of size is selected from a population that is normally distributed with a mean of 7.3 and a standard deviation of 0.82. Give the mean and the standard deviation of the sampling distribution of the sample mean. A. 8.9; 0.29 B. 7.3; 0.29 C. 7.3, 0.82 D. 8.9, 0.82
Guanbary Find the range and standard deviation for the data Items In the histogram below. +5 4. 3. Data Round the standard devlation to two decimal places if needed. The standard devlation is Submit Questlon Finat for PSY101..pptx BL 9.
Which statements regarding the mean and standard deviation are TRUE? I. As the number of measurements increases, approaches µ if there is no random error. II. The square of the standard deviation is the average deviation. III. The mean is the center of the Gaussian distribution. IV. The standard deviation measures the width of the Gaussian distribution. I and II ○ III and IV ○ II, III, and IV O I, III, and IV O I, II, and IV
4000 B.C. A.D. 150 A study was done on skull sizes of humans during different time periods. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. H2 27 27 131.05 mm 133.94 mm S 5.18 mm 5.27 mm a. Use a 0.05 significance level to test the claim that the mean skull breadth in 4000 B.C is less than the mean skull breadth in A.D 150. What are the null and alternative hypotheses? O B. Ho: H1 =H2 O A. Ho: H1 =H2 H:H1> H2 OC. Ho: H1 = H2 H1: H1 # H2 O D. Ho: H1 # H2 H: H1

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Given that a die is tossed and has the following data: x 1 2 3 4 5 6 P(x) 1/6 k1/61/6 1/6 1/6 Choose... Choose... + What is the standard deviation? Choose... Choose... 1/6 2.7 2.8 1.64 1.71 3.4 2/6 2.917 3.5 1.67 3.3