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The heights of 1500 students are normally distributed with a mean of 169.5 centimeters and a...

The heights of 1500 students are normally distributed with a mean of 169.5 centimeters and a standard deviation of 7.3 centimeters.Assuming that the heights are recorded to the nearest​ half-centimeter, how many of these students would be expected to have heights.

​(a) less than 156.0 centimeters?

b) between 165.5 and 177.0 centimeters​ inclusive?

​(c) equal to 170.0 ​centimeters?

(d) greater than or equal to 189.0 ​centimeters?

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