In the United States, the National Health Survey has determined that womens weights are normally distributed with a mean of 135 pounds and a standard deviation of 8 pounds.

1. If 1 woman is randomly selected, find the probability that her weight is between 140 and 150 pounds.

2. If60womenarerandomlyselected,findtheprobabilitythattheyhaveameanweightbetween140and150pounds.

3. If1womanisrandomlyselected,findtheprobabilitythatherweightislessthan 130pounds.

4. If45womenarerandomlyselected,findtheprobabilitythattheyhaveameanweightthatislessthan130pounds.