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# The frequency distribution below shows the distribution for IQ scores for a random sample of 1000 adults. ( Show all work. Just the answer, without...

Total

1000

- (a) Complete the frequency table with frequency and cumulative relative frequency. Express the cumulative relative frequency to three decimal places.
- (b) What percentage of the adults in this sample has an IQ score between 90 and 129, inclusive?
- (c) Which of the following IQ score groups does the median of this distribution belong to?
- 70 – 89, 90 – 109, or 110 – 129? Why?