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1. Describe t-test and explain how to interpret its results?
2. Explain when to use the z-test instead of t-test?
3. Discuss the differences between parametric and non-parametric tests?
4. Explain how the Wilcoxon Sign Test is conducted?
Statistics and Probability, Statistics
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A school district is trying to estimate the proportion of students at the high school who would eat a school breakfast if the cafeteria were opened to students at 6 am. A new employer opened up within the district and th ...
Assume that the box contains 12 balls: 4 red, 4 green, and 4 blue. Two balls are drawn at random, one after the other without replacement. What is the probability that the first ball was blue, given that the second was r ...
Suppose a sample space has things a,b and c. Twice, draw from the sample space and replace. The possible sequences formed are {aa, ab, ac,ba,bb, bc,ca,cb,cc} Now suppose there are Y different things. There are Y ways the ...
Assume in a particular year aprojecthas the following financials: NOI o $700,000; Annual Bedt Service o $430,000 (of which $400k is intrest and 30k is priciple); original loan debt of 6.2M: 39 yr depreciable life: $8M no ...
An all-equiry business has 175M shares outstanding selling for $20/share. Management believes interest rates are unreasonably low and decides to execute a leveraged recapitalization. It will raise $1B in debt and repurch ...
What is a financial and economic issue in the healthcare industry?
Discrete probability variables. Thirty percent of households say they would feel secure if they had? $50,000 in savings. You randomly select 8 households and ask them if they would feel secure if they had? $50,000 in sav ...
A doctor whats to exam prior medical records in an attempt to estimate the proportion of juvenile valley fever cases that escalated to spinal meningitis. He wants to estimate the proportion within 2% with 98% certainty. ...
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, ...
Write out the sample space for the possible genders of the children. (For example, BBG would be one possible outcome in the sample space.) Use the sample space to find the probability that the family has at least one gir ...
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