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?

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

so then what are you asking?

step-by-step explanation: