The 2007 Current Population Survey reported the following results of U. S. annua

ID: 3152081 • Letter: T

Question

The 2007 Current Population Survey reported the following results of U. S. annual household income (in thousands). Suppose one household is to be selected at random for a follow-up interview. Find the probability (as decimals rounded to three places) of the following events: 1a. The annual household income is $49,999 or less. Answer: = = 1b. The annual household income is $75,000 or more. Answer: = = 1b. The annual household income is between $30,000 and $99,999. Answer: = = 1b. The annual household income is at least $50,000 Answer: = =

Explanation / Answer

Income

Number

proportion

<15000

15506

0.133

15000-29999

19842

0.170

30000-49999

22739

0.195

50000-74999

21268

0.182

74000-99999

13841

0.119

100000 or more

23586

0.202

116782

1a) P=0.133+0.170+0.195 =0.498

1b).P=0.119+0.202=0.321

1c). P=0.195+0.182+0.119 =0.496

1d). P=0.182+0.119+0.202 =0.503