تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
(1 point) You are interested in estimating μA, the mean monthly rate of return of the stock of Company A listed on the Toronto Stock Exchange. You
randomly pick n = 34 months, for each you observe the monthly rate of return of Company A stock. You have observed the following data, in %.
4, 4.29, 8.84, 4.85, 8.57, 4.74, 6.5, 6.83, 5.29, 3.34, 7.68, 5.29, 6.81, 6.7, 2.52, 4.95, 1.56, 6.69, 9.08, 6.42, 9.13, 5.33, 3.78, 4.65, 6.25, 3.29, 8.08, 3.46,
6.57, 2.27, 6.63, 7, 5.9, 4.28
Data from the sample, are saved in the Download.csv file.
(a) Find a 95% confidence interval for μA, by Bootstrapping 1000 samples. Use the seed 3895 to ensure that R-Studio "randomly" samples the same
"random" samples as this question will expect. Use at least 4 digits after the decmial if rounding.
You can do this by including the code, you can copy it into your R-Studio to bootstrap your samples.
RNGkind(sample.kind = "Rejection");
set.seed(3895);
B=do(1000) * mean(resample(c(4, 4.29, 8.84, 4.85, 8.57, 4.74, 6.5, 6.83, 5.29, 3.34, 7.68, 5.29, 6.81, 6.7, 2.52, 4.95, 1.56, 6.69, 9.08, 6.42, 9.13, 5.33,
3.78, 4.65, 6.25, 3.29, 8.08, 3.46, 6.57, 2.27, 6.63, 7, 5.9, 4.28), 34));
Ignore any errors or warnings that show up.
lower bound =
upper bound =
(b) From the from 95% confidence interval found in (a), can you conclude that the mean monthly rate of return of Company A stock is 8%, or
HA = 8%?
?
because the ?
of the 95% confidence interval is ?
8%.
(c) From the from 95% confidence interval found in (a), can you conclude that the mean monthly rate of return of Company A stock greater than 6%, or
HA > 6%?
?
because the ?
of the 95% confidence interval is ?
6%.
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