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Ch. 6.1 #7-49 odd

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c) 60.64% of the area under the distribution curve lies to the right of it.<br />

Using the negative z table, area = 1 – 0.6064 = 0.3936. Hence Z=- 0.27.<br />

<strong>49</strong>) Find two z values, one positive and one negative, so that the areas in the two tails total the<br />

following values.<br />

a) 5%<br />

For total area = 0.05, there will be area = 0.025 in each tail. The z scores are 1.96.<br />

b) 10%<br />

For total area =0.10, there will be area = 0.05 in each tail. The z scores are 1.645.

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