Nielsen Company the mean number of TV sets in a US Household in 2013 was 2.24. Standard deviation is 1.4. A sample of 90 household is drawn. The probability that the sample mean number of TV sets is...

Nielsen Company the mean number of TV sets in a US Household in 2013 was 2.24. Standard deviation is 1.4. A sample of 90 household is drawn.
The probability that the sample mean number of TV sets is greater than 2 is
The probability that the sample mean number of TV sets is between 2.5 and 3 is

The 40th percentile of the sample mean is

it would be or wouldn't be usual because the probability of the sample mean being less than 2 is