Question Help The income breakdown of 760 Internet users surveyed recently, aski

Question

Question Help The income breakdown of 760 Internet users surveyed recently, asking whether they have logged Under $30K on to the Internet using a wireless device or not is shown to the right. Complete parts a through d below. $50K-$75K Wireless Users 41 23 37 84 Other Internet Users Total 98 52 82 196 $30K-$50K 75 119 280 Over $75K Don't know refused Total 42 105 147 a) Find the conditional distribution (in percentages) of income distribution for the wireless users Under $30K S30K-550k $50K-$75K Over $75K Dont know Round to one decimal place as needed ) Other Internet Users b) Find the conditional distribution (in percentages) of income distribution for nonwireless users Under $30K $30K-$50K $50K-$75K Over $75K Dont kno refused (Round to one decimal place as needed.) Click to select your answer(s) CPU

Explanation / Answer

a) For wireless users, conditional distribution is given by,

Under $30K = (41 * 100 / 227) % = 18.06%

$30K - $50K = (23 * 100 / 227) % = 10.13%

$50K - $70K = (37 * 100 / 227)% = 16.30%

Over $75K = (84 * 100 / 227) % = 37.00%

Don't know = (42 * 100 / 227) % = 18.50%

b) For non-wireless users, conditional distribution is given by,

Under $30K = (98 * 100 / 533) % = 18.39%

$30K - $50K = (52 * 100 / 533) % = 9.76%

$50K - $70K = (82 * 100 / 533)% = 15.38%

Over $75K = (196 * 100 / 533) % = 36.77%

Don't know = (105 * 100 / 533) % = 19.70%

c) Option (C) is the correct grapg representing the probability distribution. (Ans).

d) Here the distribution is same for wireless and non-wireless users. Hence, Option (A) is the correct choice. (Ans).

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