3.I have an exam in an hour and I want someone to solve it for me. Statistics including normal distribution,
ution, regression, decision trees
Past paper has 5 questions (attached), we will have 4. Complexity of questions will be reduced slightly for decision trees and regression.
Visualisation question – written in word file or hand-written and scanned or photographed.
Sketch using online normal distribution visualisation applet (add notes around this to discuss if necessary) or sketch by hand and scan or photograph.
For mathematical workings, use formulae sheet, copy, paste and adapt, or scan / photograph your workings and upload.
Decision tree – use Office smart shapes, or sketch by hand and scan or photograph. If formulae are required, then use formula sheet, copy, paste and adapt.
Regression – written in word file or hand-written and scanned or photographed.
MCDA – written in word file or hand-written and scanned or photographed.
Remember if they appear, decision trees and regression will be a little less technical than they have been in the past. (To allow more of a buffer with regards to time available to complete and upload).
Visualisation and MCDA questions will be more general (strengths and weaknesses, key messages, make some recommendations).
Exam questions will be set so as to minimise practical and logistical difficulties in uploading answers.
6.1) Employees in 2012 paid 4.2% of their gross wages towards social security (FICA tax), while employers paid another 6.2%.
ers paid another 6.2%. How much will someone earning $34,000 a year pay towards social security out of their gross wages?
2) The population of a town increased from 3350 in 2005 to 4800 in 2010. Find the absolute and relative (percent) increase.
3)A company's sales in Seattle were $400,000 in 2012, while their sales in Portland were $295,000 for the same year. Complete the following statements:
a. Seattle's sales were
% larger than Portland's.
b. Portland sales were
% smaller than Seattle's.
c. Portland sales were
% of Seattle's.
4) A store has clearance items that have been marked down by 55%. They are having a sale, advertising an additional 30% off clearance items. What percent of the original price do you end up paying?
5) A friend has a 83% average before the final exam for a course. That score includes everything but the final, which counts for 15% of the course grade.
What is the best course grade your friend can earn?
What is the minimum score your friend would need on the final to earn a 75% for the course?
Give answers accurate to at least one decimal place.
6) A car is driving at 50 kilometers per hour. How far, in meters, does it travel in 3 seconds?
Give your answer to the nearest meter.