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1. You saw 3 inferential tests last week Large sample Z small sample t Think of a measurable problem you know of and tell whether you would use a Z test or a t test Tell me why ( more than just being driven by sample size ) and describe the hoped for result
2. Paired sample means tests are used when there is no historical data. Give me one example and some rationale where you would see a reason for wanting to use a paired sample means test
3. A typical recommendation from an inferential test is to either not Reject the null implying no statistical difference in the means or to reject implying there is a statistical difference in the means. Usually the person giving the recommendation will include the confidence level ( aka the Alpha ) and will usually say "with a small chance of statistical error" What is this statistical error and what do you think about this thing called error?
4. You just finished getting your data, made sure there were no fliers and the data was correct You created a mean and standard deviation and ran your Z test at the 0.05 alpha Your decision rule is 1.645 and your Z test statistic ( step 3 ) is 1.647 What do you do ( reject or not ) and how do you feel about your decision
Write the elements of matrix R in terms of real-numbers r1, r2,..............rN. Clearly, show at least the top 4 x 4 part and all the elements on the four corners.
Question 1: Baseball is a sport that generates a lot of data, which fans use to try to predict the factors that lead to successful teams. One fan compiled the team batting average and the team percentage of games won for the 14 American League tea..
Your boss calls you into his office and he is extremely angry. He was embarrassed at a meeting because he put forward a recommendation that you had made and his idea was shot down by one of the technical geniuses in another department.
The mean incubation time of fertilized chicken eggs keep at 100.5oF in a still-air incubator is 21 days. Suppose that the incubation times are approximately normally distributed with standard deviation of 1 day. If you are taking 400 random sample..
Evaluate lim sup Ek
problem 1 let fr-gtr be a function fxx if xgt0 x-1 if xlt0evaluate whether f isa u-u continuous.b c-c
Elastic energy is the potential mechanical energy stored in the volume of a material
Interpret the null hypothesis using your t-statistic. Interpret the null hypothesis using p-value. Interpret your confidence interval and test the null hypothesis using confidence interval.
What results in your departments seem to be correlated or related (either causal or not) to other activities?
What is the probability that it snows 2 times in a 10 day period?
Find the inverse transform and find the Laplace transform - Express the following function in terms of unit step functions
1. A research study performed at checkout lines at Publix Supermarket in South Florida revealed that between 4pm and 7pm on weekdays there is an average of 4 customers waiting in line. What is the probability that you visit a Publix today during t..
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