7 OF 15 QUESTIONS REMAINING Assume that your uncle holds just one stock, East Coast Bank (ECB), which he thinks has very little risk. You agree that the stock is relatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following returns data for West Coast Bank (WCB). Both banks have had less variability than most other stocks over the past 5 years. Measured by the standard deviation of returns, by how much would your uncle's risk have been reduced if he had held a portfolio consisting of 54% in ECB and the remainder in WCB? (Hint: Use the sample standard deviation formula.) Do not round your intermediate calculations. Year ECB WCB Time limi 60 minute 5 Attempts 2 attempt Grading Maxim 40.00% 40.00% Description Final exam will -10.00% 15.00% part covers the that were cover B 35.00% -5.00% July 17 at 12:01a -5.00% -10.00% 18. No late subr date, you will no 5 15.005 35.00% Average return= 15.0095 15.00% Standard deviation = 22.645 22.64% A) 3.59% B) 4.27% 2.99% (D) 3.99% exam covers ma allowed is ONE attempts are all recorded.

Essentials Of Investments
11th Edition
ISBN:9781260013924
Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Publisher:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Chapter1: Investments: Background And Issues
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7 OF 15 QUESTIONS REMAINING
Assume that your uncle holds just one stock, East Coast Bank (ECB), which he thinks has very little risk. You agree that the stock is
relatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following
returns data for West Coast Bank (WCB). Both banks have had less variability than most other stocks over the past 5 years.
Measured by the standard deviation of returns, by how much would your uncle's risk have been reduced if he had held a portfolio
consisting of 54% in ECB and the remainder in WCB? (Hint: Use the sample standard deviation formula.) Do not round your intermediate
calculations.
Year
ECB
WCB
Time limi
60 minute
5
Attempts
2 attempt
Grading
Maxim
40.00%
40.00%
Description
Final exam will
-10.00%
15.00%
part covers the
that were cover
B
35.00%
-5.00%
July 17 at 12:01a
-5.00%
-10.00%
18. No late subr
date, you will no
5
15.005
35.00%
Average return=
15.0095
15.00%
Standard deviation =
22.645
22.64%
A) 3.59%
B) 4.27%
2.99%
(D) 3.99%
exam covers ma
allowed is ONE
attempts are all
recorded.
Transcribed Image Text:7 OF 15 QUESTIONS REMAINING Assume that your uncle holds just one stock, East Coast Bank (ECB), which he thinks has very little risk. You agree that the stock is relatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following returns data for West Coast Bank (WCB). Both banks have had less variability than most other stocks over the past 5 years. Measured by the standard deviation of returns, by how much would your uncle's risk have been reduced if he had held a portfolio consisting of 54% in ECB and the remainder in WCB? (Hint: Use the sample standard deviation formula.) Do not round your intermediate calculations. Year ECB WCB Time limi 60 minute 5 Attempts 2 attempt Grading Maxim 40.00% 40.00% Description Final exam will -10.00% 15.00% part covers the that were cover B 35.00% -5.00% July 17 at 12:01a -5.00% -10.00% 18. No late subr date, you will no 5 15.005 35.00% Average return= 15.0095 15.00% Standard deviation = 22.645 22.64% A) 3.59% B) 4.27% 2.99% (D) 3.99% exam covers ma allowed is ONE attempts are all recorded.
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