6. The mean selling price of new homes built in 2015 was $360,600 and the standard deviation was $112,000. If 800 home s

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6. The mean selling price of new homes built in 2015 was
$360,600 and the standard deviation was $112,000. If 800 home sales
are selected at random, find the number of homes that
cost
(a) more than $500,000
(b) between $200,000 and $300,000
(c) less than $150,000
7. The mean for a reading test given nationwide is 80,
and the standard deviation is 8. If the data is normally
distributed and 10,000 students take the test, find the
following:
(a) The number of students who will score above 90
(b) The number of students who will score between 78 and 88
(c) The number of students who will score below 76
(d) The percentile of a student who scores 94