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Question: a. What assumptions must be satisfied for a two-sided t-test to be valid?
b. Consider each assumption in turn. What happens if the assumption is not satisfied? What, if anything, can be done to fix the problem?
The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.
Using this data set, compute the: mode, median, mean, range, interquartile range, variance, standard deviation and coefficient of variation
According to Berford's law, a variety of different data sets includes numbers with leading (first) digits that follow the distribution shown in the nine row of Table 1. The bottom row lists the frequencies of leading digits of the populations of a..
Be sure to show whether you use the t- or z- value, and what value you use. Interpret the confidence interval in a single sentence. In another sentence, state why you used either the "t" or the "z".
Identify the predictors and the response variable in the dataset. Randomly select 70% of the data as training data and the remaining 30% as test data. Install the package glmnet and use elastic net method on the training data to determine an appro..
you conducted a t-test in your capstone research. you did not find a statistically significant difference between your
Conduct a t-test for independent samples to determine if respondents' assessment of County government service delivery differed between those who had contact with the County in the last year versus those who did not.
Write a program to toss a coin 10,000 times. Let Sn be the number of heads in the first n tosses. Have your program print out, after every 1000 tosses, Sn - n/2. On the basis of this simulation
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Formulate and test an appropriate set of hypotheses to determine if the machine can be qualified. Use a = 0.05. Find the P-value.
Vehicle colors. Vehicle colors differ among regions of the world. Here are data on the most popular colors for vehicles in North America and Europe:
Resume fraud. In 2002 the Veritas Software company found out that its chief financial officer did not actually have the MBA he had listed on his resume.
Given an urn containing three red, four green, and five yellow balls, if two balls are drawn from the urn (without replacement).
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