Mathematics, 27.11.2019 23:31 LMixer5sosCR7Fan
Astockbroker at critical securities reported that the mean rate of return on a sample of 10 oil stocks was 12.6% with a standard deviation of 3.9%. the mean rate of return on a sample of 8 utility stocks was 10.9% with a standard deviation of 3.5%. at the 0.05 significance level, can we conclude that there is more variation in the oil stocks?
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Astockbroker at critical securities reported that the mean rate of return on a sample of 10 oil stoc...
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