4 The frequency distribution below shows the distribution for IQ scores for a random sample of 1000 adults (Show all work Just the answer, without supporting work, will receive no credit IQ Scores Frequency Relative Frequency Cumulative 50 69 23 23 1000 230 23 70 89 25(1000) 0 250 273 90 109 448 448 1000 448 721 110 129 254 1000 254 975 130 149 25 25 1000 025 100 Total 1000 1 00 (a) Complete the frequency table with frequency and relative frequency Express the relative frequency to three decimal places (b) What percentage of the adults in this sample has an IQ score of at least 90 (c) Does this distribution have positive skew or negative skew Why or why not

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Question: 4 The frequency distribution below shows the distribution for IQ scores for a random sample of 1000 adults. (Show all work. Just the answer, without

The frequency distribution below shows the distribution for IQ scores for a random sample of 1000 adults. (Show all work. Just the answer, without supporting work, will receive no credit

IQ Scores	Frequency	Relative Frequency	Cumulative
50 - 69	23	23/1000=.230	23
70 - 89	.25(1000)	0.250	273
90 -109	448	448/1000=.448	721
110 - 129		254/1000=.254	975
130 - 149	25	25/1000=.025	100
Total	1000	1.00

(a) Complete the frequency table with frequency and relative frequency. Express the relative frequency to three decimal places. (b) What percentage of the adults in this sample has an IQ score of at least 90? (c) Does this distribution have positive skew or negative skew? Why or why not?

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