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A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions. She has to decide on a strategy in which she will place four balls (marked A,B,C and D) into a box. She randomly selects one ball for each question and replaces the ball in the box. The marking on the ball will determine her answer to the question. There are five multiple choice question on the exam. What is he probability that she will get:
a. Five question correct
b. At least four question correct
c. No question correct
d. No more than two question correct
Need help discussing Regression Analysis and Bulgaria. I am conducting a country analysis and need to discuss this. Please cite any references used.
The exercise problem the following information to figure prevalence and incidence rate:
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
Suppose the manufacturers claim is right, determine the probability the mean of sample is 47,840 miles or less?
You are estimating the install hours for an electronics upgrade based on the number of components affected. The upgrade for which you are estimating affects 25 components. Given the following equation, select the correct response from each pair.
The article can be on Descriptive Statistics, Probability and the Normal Distribution, Sampling and Sampling Distributions, Regression Analysis, or Time Series Forecasting.
Given that both balls selected are white what is the probability that bowl 3 was selected?
The 50 members of the placebo group had blood pressure lowered by an average of 15 points with standard deviation 8 points. To analyze this information we will use a, When testing whether or not the increases in spending are different, the test is ..
Calculate chi-square for the cross-tab. Show your work. Is there a statistically significant relationship between these variables?
a. Formulate the null and alternative hypotheses. b. Which statistical test would you use? Why?
Research question : At α = . 01, is degree of certainty independent of credits earned?
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is
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