Question 1076937
z>(213-204)/56=0.4362; it has to be < 0.5 because the scores concerned are all greater than the mean.
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204, mean doesn't change
6.074, sd changes with the sqrt (n)
The sampling distribution has a normal distribution with the same mean as the population mean and a standard deviation sigma/sqrt (n).  This says that while a single observation can be 2 sd from the mean, it is much less likely that the mean of 10 observations will be 2 sd from the mean, quantifying how far it can be.
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z>(9/6.074)>1.480
probability is 0.0692