Mathematics, 10.09.2019 20:10 myalee1419
Among a random sample of 500 college students, the mean number of hours worked per week at non-college-related jobs is 14.6. this mean lies 0.4 standard deviations below the mean of the sampling distribution. if a second sample of 500 students is selected, what is the probability that for the second sample, the mean number of hours worked will be less than 14.6?
Answers: 1
and variance 
, where 
is the variance of the population that generates the data. In this way the random variable;
is a standard normal variable. As 
, then 
.
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Among a random sample of 500 college students, the mean number of hours worked per week at non-colle...
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