Project 3 | Mathematics homework help


 

Project 3 instructions

 

Based on Larson & Farber: sections 5.1–5.3

 

 

 

Go to http://www.google.com/finance/historical?cid=694653&startdate=Nov+20%2C+2011&enddate=Nov+18%2C+2012&num=30&ei=JaipUPDLIIK10QH57wE

 

Click the coalesce on the fair that says Download to Spreadsheet.  Set the date concatenate to end on 11/19/13 (the inauguration of Module/Week 5) and going end accurately 1 year (11/20/12).  Then, click the coalesce on the fair that says, “Download to Spreadsheet.” Assume that the bankruptcy appraisements of the hoard mould a ordinaryly select postulates set. (Now allure be a cheerful purpose to retrospect the specification and properties of a ordinary arrangement on p. 236

 

Do not manually sum computes in the postulates set, but use the purposes establish in sections 5.2–5 .3. (You may failure to retrospect how to furnish balance and measure rupture loving a postulates set. It allure besides acceleration to retrospect how to use Excel to furnish those quantities. Please apex to the Excel finish I posted on DB>>Useful finishs) Complete this assignment among a solitary Excel finish. Show your performance where potential.

 

Answer the following:

 

 

 

  1. If a idiosyncratic bought 1 distribute of Google hoard among the developed year, what is the appearance that the hoard on that day secretive at hither than the balance for that year?  Hint: Use the Empirical Rule, do not rate the balance. The counterpart is manageable.

 

Hint: use attribute #2 on p. 236- the ordinary incurvation is bell-shaped and is symmetric encircling the balance.

 

2. If a idiosyncratic bought 1 distribute of Google hoard among the developed year, what is the appearance that the hoard on that day secretive at past than $500?  Hint: Use Excel to furnish the balance and measure rupture. Then furnish the z reckoning.

 

Hint: To furnish that, you allure demand to furnish: a) the balance, b) furnish z reckoning (let’s circumvent it z1) that fits to x = 500, c) furnish P(z< z1), and recircumvent that P(z > z1) = 1 – P(z<z1)

 

3. If a idiosyncratic bought 1 distribute of Google hoard among the developed year, what is the appearance that the hoard on that day secretive among $45 of the balance for that year? Hint: Furnish two z reckonings and use the Measure Ordinary Table. 

 

Hint: Furnish the z-scores that fit to adding and deducting $45 from the balance.   Find the fiting probabilities and then deduct.

 

4. Suppose a idiosyncratic among the developed year claimed to feel bought Google hoard at bankruptcy at $700 per distribute. Would such a appraisement be considered rare?  Explain by using the Empirical Rule, do not furnish the max or min computes of the daily bankruptcy appraisements

 

Hint: furnish the z reckoning. What z reckoning do we say that the fiting postulates apex x is rare?

 

5. At what appraisement would Google feel to obstruct at in dispose for it to be considered statistically rare? You should feel a low and excellent compute. Use the Empirical Rule.

 

Hint: You allure feel an loftier frisk and a inferior frisk. You allure demand to furnish the measure rupture of the postulates set antecedently you returns.

 

6. What are Q1, Q2, and Q3 in this postulates set? Use Excel to furnish these computes.

 

Hint: use = quartile(array, 1) to furnish Q1, =quartile(array, 2) to furnish Q2, and =quartile(array, 3) to furnish Q3. The adorn is your postulates set. 

 

7. Is the conviction that was made at the inauguration substantial? Why or why not?  Hint: Construct a histogram.

 

Hint: Does the postulates set feel the properties of a ordinary arrangement? Is the balance and median almost the similar? Is the dissimilitude among Q1 and Q2 and the dissimilitude among Q2 and Q3 almost the similar?