= 220/10 = 22 What is the standard deviation of the data set: 42,41,56,78,86,49,82,35,59,37 ? Report an issue . If the variance of a set of scores on a standardized test is 100, the standard deviation will be: a. 0.77 c. 0.80 d. 0.85 e. None of the above. The following probability distribution table is for the random variable, x, the number of computers in a household. If the standard deviation of a portfolio's returns is known to be 30%, then its variance is [{Blank}]. If a Recession economy occurs (0.1 probability), the expected return is -60%. We have provided Controlling Class 12 Business Studies MCQs Questions with Answers to help students understand the concept very well. The correlation coefficient between the r... A cat has 7 kittens. The Credit Risk Department of a major bank estimates the default rate on loans under $10,000 to be 1% . High mean with high standard deviation. The following are distances (in miles) traveled to the workplace by 6 employees of a certain brokerage firm: 20, 9, 18, 13, 16, and 20. . A film-coating process produces films whose thicknesses are normally distributed with a mean of 110 microns and a standard deviation of 10 microns. A random sample of size 1,000 is taken. Assume the population proportion is 0.55. What is the equation for standard deviation? What percent of high school teachers make betw... What is the standard deviation of the following data set: 1.3, 2.4, 1.5, 2.6, 1.3, 2.4, 1.3, 9, 9, 1.8. 57% b. 250 c. 450 d. 750 e. What... What is an example of when you might want a large standard deviation (data that is more spread out)? The amount of fluctuation in the data. MD, DM, FACC, FRCP London. Use the Central Limit Theorem and the Empirical Rule. The following data describes the distribution of annual household incomes in 3 regions of a country. Previous year questions (2016-20) - Current Electricity (Part - 1), Solved Examples - General Organic Chemistry, JEE-Mains 2021 to be held four times, starting 23-26 Feb, How to prepare for Chemistry for JEE? The standard deviation of the error terms in an estimated regression equation is known as: a) coefficient of determination. You randomly select a sample of 2 observations without replacement and calculate the sample mean. The mean weight of a group of 10 items is 28 and that of another group of n items is 35.The mean of combined group of 10 + n items is found to be 30. What is the pooled variance for the two samples? Given: E(R1) = 0.10 E(R2) = 0.15 E(sigma1) = 0.03 E(sigma2) = 0.05 Calculate the expected standard deviation of a two stock portfolio in which Stock 1 has a weight of 60 percent if r1,2 = 0.25. Find the weight that is 2 standard deviations below the me... Krung's average on his Stats test remains 75 but the standard deviation is lowered to 10 points with his new lectures. In what case would the sum of the deviations from the mean not be zero? Which statement about standard deviations (SDs) is true? If is large, there is a ______ degree of dispersion. Business Statistics Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer Key (Business Statistics Quick Study Guide & Course Review) covers subject tests for competitive exams to solve 600 MCQs. She reported the mean age as 75 years, with a standard deviation of 10 years. In a certain town, 20% of adults have a college degree. |Marks |0-20 |20-40 |40-60 |60-80 |80-100 |No. What is the standard deviation of the sampling distribut... A sample of 171 random students found that the proportion of students planning to travel home for Thanksgiving is 0.76. During the past year, the mean lead time demand for bandage BX-5 was 60. The centrality of the data. Determine the range, mean, variance, and standard deviation of the sample data set. Given the three sample proportions 0.21, 0.37, and 0.44, determine the MAD statistic. a. Four friends want to room with you in your three-bedroom flat. If P(X greater than 50) = 0.10 and P(X less than 60) = 0.97, find the mean and standard deviation. A. True or false: The coefficient of variation divides the variance of the returns of an asset by the expected return of that asset. Find the mean and standard deviation of the given random variables: a. v = 4 x. b. w = 4 x + 8. x 1 2 3 4 5 6 P (x) 0.03 0.14 0.31 0.33 0.15 0.04 What is the value of th... Find the variance and standard deviation of the following sample. b. the difference from a budgeted amount. Given the following data: 2, 5, 9, 7, 7, 12, 7, 3, 13. In the United States. 1. Answer: E. 8. The monthly salaries (in thousands of dollars) of a sample of sales representatives are as follows: 8, 11, 12, 13, 6 Find the standard deviation of this sample of monthly salaries. sum=n/2(a+l) Find the standard deviation for this data set. What is an example of when you might want a large standard deviation? The following frequency table summarizes the distances in miles of 100 patients from a regional hospital. Assume that it costs 0.3 dollars per minute to call Taiwan and 0.5 dolla... For the data 1.01, 0.99, 1.12, 1.27, 0.82, 1.04, calculate the standard deviation under both of the following conditions. Standard Deviation. The standard deviation is [{Blank}]. The following is a list of the reported data... One sample has n = 8 and SS = 21 and a second sample has n = 8 and SS = 35. You think that your chance of getting a well-paid job in an investment bank is about 20 per cent. An assessment of this growth has been made by counting the bacteria in each of 5 randomly chosen specimens of ocean water (o... Below are the times (in days) it takes for a sample of 5 customers from Linda's computer store to pay their invoices. + X_{16} } / {16}? The mean was 95 and the variance was 25. Round answers to 2 decimal places. What are the mean, variance, and standard deviation of a discrete probability distribution? About 1% of the population has a particular genetic mutation. 10.830 c. 1.844 d. 3.291. If two random samples of sizes 30 and 36 are selected independently from two populations with means 78 and 85 , and standard deviations 12 and 15 , respectively, then probability that th... Would it be appropriate to say that a distribution with a standard deviation of 12 centimeters is more dispersed than a distribution with a standard deviation of 6 inches? Find the standard deviation of this sample of monthly salaries. Approximate the mean and standard deviation of the square footage. Which of the following two lists has the larger standard deviation? The probability distribution of a discrete random variable, x, is defined in the table shown here. True or False. 40, 49, 50, 51, 60 C. 40, 42, 50, 58, 60 D. 40, 40, 5... How to compute the population standard deviation and sample standard deviation from the data set: 2, 4, 5, 6, 8. if 15 students had a mean score of 74.8% and a standard deviation of 7.57, how many students scored above 85%? 6. 71, 52, 46, 68, 64, 59, 64, 66, 50. Does increasing the number of measurements change the standard deviation... Let X_1 ,. What is the probability the random sample will have 550 or more in favor of the issue? Calculate... What is an example of when you would want consistent data and, therefore, a small standard deviation? In a recent survey, 80% of the community favored building a police substation in their neighborhood. 800 people are randomly selected. x = 0, 1, 2, 3, 4, 5 P (X = x) =... What does the size of a z-score indicate?
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