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MarylandSTATSTAT 230Stat 230 Midterm STAT 230
Spring 2013
(Maximum Time-3 Hours)
Circle the best answer for each question
Use the following data for questions 1 through 4:
5,12,6,8,5,6,7,5,12,4.
1. The
median is
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MATH 113-In a study of a weight loss program In a study of a weight loss program,6 subjects lost an average of50 lbs. It is found that there is about a20%chance of getting such results with a diet that has no effect.Does this have weig …
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PSY-520-Is it true that parametric tests are generally Is it true that parametric tests are generally more powerful than nonparametric tests? If so, give two reasons why you might choose to use a nonparametric test instead of a parametric test. …
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MATH 130-A poker hand consisting of 9 cards A poker hand consisting of 9 cards is dealt from a standard deck of 52 cards. Find the probability that the hand contains exactly 8 face cards. …
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Suppose that you are investigating the 6. (Problem 12.21) Suppose that you are investigating the relative wages of male and female workers in a given industry. In a simple random sample of 12 males you ?nd X,“ = $500 (per week) and em …
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Assignment 1 Econometrics-Conditional Expectation A random variable Y Assignment #1EconometricsDue: Thursday September 14th at 9:30 AM 11.1 TheoryConditional Expectation A random variable Y is equal to six plus three times a random variable X:Y =6+3×XWhat is:E[Y |X = c …
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PSYCHOLOGY 4700-For each of the following, indicate whether For each of the following, indicate whether the expected relationship between the two variables will be positive (+), negative (-), or zero (0)____ a. size of house and size of electric bill____ b. he …
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PSYCH 625-Chi-Square Worksheet-Look at the following chi-square output Chi-Square WorksheetLook at the following chi-square output, and answer the questions below it.Chi-Square TestFrequenciesPreferenceObserved N Expected N ResidualNuts & Grits 9 20.0 -11.0Bacon Surp …
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Assume that an average classroom is 8 m deep Assume that an average classroom is 8 m deep, 10 m wide, and 3m high. Smoking one cigarette releases approximately 0.10 grams of particulates into the air.(a) If the air in the room initially contains …
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A commercial establishment has a private hauler A commercial establishment has a private hauler who weighs the solid waste transported to the landfill. The data for ten consecutive weeks (in lbs) are: 540, 620, 920, 410, 312, 820, 540, 42 …
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