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Describe data and objectives - starting with descriptive statistics reader has no idea what this is all about; histogram needs much finer bins to be of use; given the ratio of the 2 variances can not pool them, so pooled variance analysis not correct; total degrees of freedom is wrong - check textbook; you start with scatterplots and correlation before regression; scatterplots need to be much more refined to be of use; so, you have a relationship - how much of the variation does the model explain and what are the practical conclusions?
A large university says the mean number of classroom hours per week for full-time faculty is more than 9. A random sample of the number of classroom hours for full-time faculty for one week is listed.
Calculate the total cost of interest for both mortgage options. How much does the buyer save in interest with the 20 year option ?
whereas Zoe's class has an average of 83% with a standard deviation of 12%. Assume that scores in both classes follow a normal distribution. Convert Maria's midterm score of 84 to a standard z score.
The remainder are defective. If 4 of the products are randomly selected, find the probability that all of them are acceptable.
art, French, and mathematics. He chooses art with probability 5/8, French with probability 5/8, and art and French together with probability 1/4. What is the probability that he chooses mathematics?
What is it that differentiates a binomial probability distribution from any other probability distribution? & The employees at a General Motors assembly plant are polled as they leave work.
Probability based on addition rule - Find the probability that a randomly chosen sold automobile from this sample is silver or an SUV?
Find the probability of getting at most 25 lefties assuming that they are chosen with a process designed to yield a 12% rate of lefties.
A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime.
brief discussion telling why you chose this particular data set to study. As in discussion two, I am hoping that you will choose data that has some relevance to your life.
In our discussions of basic probability theory the concepts of mutually exclusive events and independent events share prominent roles.
A researcher claims that the average age of people who buy lottery tickets is 64. A sample of 30 is selected and their ages are recorded as shown below.
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