MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Concept explainers

Addition Rule of Probability
It simply refers to the likelihood of an event taking place whenever the occurrence of an event is uncertain. The probability of a single event can be calculated by dividing the number of successful trials of that event by the total number of trials.
Expected Value
When a large number of trials are performed for any random variable ‘X’, the predicted result is most likely the mean of all the outcomes for the random variable and it is known as expected value also known as expectation. The expected value, also known …
Probability Distributions
Understanding probability is necessary to know the probability distributions. In statistics, probability is how the uncertainty of an event is measured. This event can be anything. The most common examples include tossing a coin, rolling a die, or choosi…
Basic Probability
The simple definition of probability it is a chance of the occurrence of an event. It is defined in numerical form and the probability value is between 0 to 1. The probability value 0 indicates that there is no chance of that event occurring and the prob…
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Dr. Khoury NAME MULTIPLE CHOICE. Choose the one alternativethat best completes the statement or answers the question. the given degree of confidence and sampledata to construct a contidence interval for the population mean p. AsSsume that the population has a normal distribution. 1) n = 10, x = 13.8, s= 2.4, 95 percent A) (12.11, 15.49) 1) B) (12.08, 15.52) C) (12.09, 15.51) D) (12.41, 15.19) Find the necessary sample size. 2) A population is normal with a variance of 99. Suppose you wish to estimate the population mean u. Find the sample size needed to assure with 68.26 percent confidence that the sample mean will not differ from the population mean by more than 4 units. A) 9 2) B) 7 C) 613 D) 25 Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. 3) A survey of 865 voters in one state revealsthat 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all votersin the state who favor approval. A) 0.438 <p< 0.505 C) 0.471 <p< 0.472 3) B) 0.444 <p < 0.500 D) 0.435 <p < 0.508 Solve the problem. 4) A pollster wishes to estimate the true proportion of U.S. voters that oppose capital punishment. How many voters should be surveyed in order to be 96 percent confident that the true proportion is estimated to within 0.02? 4) A) 2627 B) 53 C) 2626 D) 1 Use the given degree of confidence and sample data to find a confidenceinterval for the population standard deviation o. A ssume that the population has a normal distribution. 5) The mean replacement time for a random sample of 20 washing machines is 9.0 years and the standard deviation is 2.4 years. Construct a 99% confidence interval for the standard deviation, o, of the replacement times of all washing machines of this type. A) 1.7 yr <o<5.0 yr C) 1.7 yr <o<3.8 yr 5) B) 1.6 yr <o< 4.6 yr D) 1.7 yr <o< 4.0 yr Compute the test statistic used to test the null hypothesisthat p1 = p2. 6) n1 = 156 n2 = 148 6) X1 = 75 X2 = 67 A) 11.102 B) 0.490 C) 0.480 D) 5.978 SHORT ANSWER. Write the word or phrase that best completes each statement or answ ers the question. Use the traditional method to test the given hypothesis. Assume that the samples are independent and that they have been randomly sel ected (SHOW ALL WORK in the space provided) 1
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Transcribed Image Text:Dr. Khoury NAME MULTIPLE CHOICE. Choose the one alternativethat best completes the statement or answers the question. the given degree of confidence and sampledata to construct a contidence interval for the population mean p. AsSsume that the population has a normal distribution. 1) n = 10, x = 13.8, s= 2.4, 95 percent A) (12.11, 15.49) 1) B) (12.08, 15.52) C) (12.09, 15.51) D) (12.41, 15.19) Find the necessary sample size. 2) A population is normal with a variance of 99. Suppose you wish to estimate the population mean u. Find the sample size needed to assure with 68.26 percent confidence that the sample mean will not differ from the population mean by more than 4 units. A) 9 2) B) 7 C) 613 D) 25 Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. 3) A survey of 865 voters in one state revealsthat 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all votersin the state who favor approval. A) 0.438 <p< 0.505 C) 0.471 <p< 0.472 3) B) 0.444 <p < 0.500 D) 0.435 <p < 0.508 Solve the problem. 4) A pollster wishes to estimate the true proportion of U.S. voters that oppose capital punishment. How many voters should be surveyed in order to be 96 percent confident that the true proportion is estimated to within 0.02? 4) A) 2627 B) 53 C) 2626 D) 1 Use the given degree of confidence and sample data to find a confidenceinterval for the population standard deviation o. A ssume that the population has a normal distribution. 5) The mean replacement time for a random sample of 20 washing machines is 9.0 years and the standard deviation is 2.4 years. Construct a 99% confidence interval for the standard deviation, o, of the replacement times of all washing machines of this type. A) 1.7 yr <o<5.0 yr C) 1.7 yr <o<3.8 yr 5) B) 1.6 yr <o< 4.6 yr D) 1.7 yr <o< 4.0 yr Compute the test statistic used to test the null hypothesisthat p1 = p2. 6) n1 = 156 n2 = 148 6) X1 = 75 X2 = 67 A) 11.102 B) 0.490 C) 0.480 D) 5.978 SHORT ANSWER. Write the word or phrase that best completes each statement or answ ers the question. Use the traditional method to test the given hypothesis. Assume that the samples are independent and that they have been randomly sel ected (SHOW ALL WORK in the space provided) 1
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