Here are the best study resources to pass QUESTIONS & ANSWERS. Find QUESTIONS & ANSWERS study guides, notes, assignments, and much more.
Statistics > QUESTIONS & ANSWERS > University of Houston, Victoria STAT QMSC6351 Tq-data-CORRECTED BY EXPERTS (All)
Statistics > QUESTIONS & ANSWERS > BMAL 590 Quantitative Research Techniques and Statistics (All)
Statistics > QUESTIONS & ANSWERS > Edexcel AS Maths Statistical hypothesis testing 1 Section 2: More about hypothesis tests QUESTION AND ANSWERS/SOLUTIONS (All)
Statistics > QUESTIONS & ANSWERS > Chamberlain College of Nursing Week 5 Math 225N Statistics Quiz Latest 2022 (All)
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Statistics > QUESTIONS & ANSWERS > selects simple random samples of 30 finished products and computes the sample mean product weight. If test results over a long period of time show that 5% of the values are over 2.1 pounds and 5% are under 1.9 pounds, what are the mean and the standard deviation for the population of products produced with this process? Assuming a "Normal" distribution Mean = (1/2)(2.1+1.9) = 2.0 With 5% in each tail, we have 90% in the middle of the distribution. This translates into a z-value of P(Z < z*) = 0.05 has a z* = 1.645 2.0 + (1.645)(s) = 2.1 s = 0.1 / 1.645 = 0.06079 5. In an effort to estimate the mean amount spent per customer for dinner at a major Atlanta restaurant, data were collected for a sample of 49 customers. Assume a population standard deviation of $5. a. At 95% confidence, what is the margin of error? The margin of error is found using the following formula: In order to find the margin of error we need to find first. Since we want a confidence level of 95% this implies that = 5%, which means that = 0.025. =-1.959963986 Margin of error is equal to (-1.9599)(5/(49) = -1.399928571 b. If the sample mean is $24.80, what is the 95% confidence interval for the population mean? σ = 5 x = 24.8 ̅ n= 49 Confidence level = .95 Z Interval (23.4, 26.2) x =24.8 ̅ This study source was downloaded by 100000829219024 from CourseHero.com on 08-1 (All)
Statistics > QUESTIONS & ANSWERS > NAS2 Challenge Exam Questions and answers. 100% Accurate (All)
Statistics > QUESTIONS & ANSWERS > North Carolina State University ST 350 ST 350 Homework #2 This Excel file Flight Performance US Airports shows the flight data for a recent month at most US airports. Variables included are City, State, AirportCode, Airport, Flights, Delayed, Cancelled, Diverted, Ontime, and Ontime Percentage. Use Excel to make a histogram of the variable Ontime Percentage. Read the comments below for assistance. (All)
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Statistics > QUESTIONS & ANSWERS > MAT 300 STATISTICS Unit 2 - Practice Milestone 2, Latest Questions and Answers with Explanations, All Correct Study Guide, Download to Score A (All)
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