Question

In: Statistics and Probability

An investment advisor claimed that the return to Bitcoin is 4% while the returns to other...

An investment advisor claimed that the return to Bitcoin is 4% while the returns to other three shares are no different from zero. Do you agree? Justify your reasoning using a two-tailed hypothesis test approach at the significance level of 5%.

Bitcoin
Mean 1.566281492
Standard Error 1.019391171
Median 1.425067488
Mode #N/A
Standard Deviation 14.7723815
Sample Variance 218.2232553
Kurtosis 11.72022419
Skewness -1.075057651
Range 165.6816869
Minimum -100
Maximum 65.68168686
Sum 328.9191133
Count 210

TLS

Mean -0.7385425
Standard Error 0.50800517
Median -0.17398
Mode 0
Standard Deviation 7.36169432
Sample Variance 54.1945432
Kurtosis 159.781158
Skewness -11.836209
Range 107.894737
Minimum -100
Maximum 7.89473684
Sum -155.09393
Count 210

BHP

Mean -0.399923172
Standard Error 0.564401885
Median -0.234980011
Mode #N/A
Standard Deviation 8.178960351
Sample Variance 66.89539242
Kurtosis 105.6649434
Skewness -8.574422353
Range 119.1594623
Minimum -100
Maximum 19.1594623
Sum -83.9838661
Count 210

CBA

Mean -0.514242394
Standard Error 0.507107254
Median 0.104494399
Mode #N/A
Standard Deviation 7.348682261
Sample Variance 54.00313098
Kurtosis 162.4049611
Skewness -11.97272186
Range 107.0984119
Minimum -100
Maximum 7.098411947
Sum -107.9909028
Count 210

Solutions

Expert Solution

First for bitcoin :

Null Hypothesis : H0 : = 4%

Alternative Hypothesis : Ha : 4%

Test statistic

t = (1.566281492 - 4)/1.019391171 = -2.387

Here for degree of freedom = 210 - 1 = 209

and 0.05 signficance level

tcritical = 1.9714

Here l t l > tcritical so we reject the null hypothesis and conclude that return in bitcoin is not 4%.

now for stock 1 TLS

Null Hypothesis : H0 : = 0%

Alternative Hypothesis : Ha : 0%

Test statistic

t = (-0.7385425 - 0)/0.50800517 = -1.4538

Here for degree of freedom = 210 - 1 = 209

and 0.05 signficance level

tcritical = 1.9714

Here l t l < tcritical so we fail to reject the null hypothesis and conclude that return in TLS stock is not different from 0%.

now for stock 2 BHP

Null Hypothesis : H0 : = 0%

Alternative Hypothesis : Ha : 0%

Test statistic

t = (-0.399923172- 0)/0.564401885 = -0.7086

Here for degree of freedom = 210 - 1 = 209

and 0.05 signficance level

tcritical = 1.9714

Here l t l < tcritical so we fail to reject the null hypothesis and conclude that return in BHP stock is not different from 0%.

now for stock 3 CBA

Null Hypothesis : H0 : = 0%

Alternative Hypothesis : Ha : 0%

Test statistic

t = (-0.514242394- 0)/0.507107254= -1.014

Here for degree of freedom = 210 - 1 = 209

and 0.05 signficance level

tcritical = 1.9714

Here l t l < tcritical so we fail to reject the null hypothesis and conclude that return in CBA stock is not different from 0%.


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