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3. Many companies are interested in knowing the percentage of adults who buy clothing online. How...

3. Many companies are interested in knowing the percentage of adults who buy clothing online. How many adults must be surveyed in order to be 90% confident that the sample percentage is in error by no more than three percentage points if.....

  1. ...you use a recent result from the Census Bureau: 80% of adults buy clothing online.
  2. ...you assume that we have no prior information suggesting a possible value of the proportion.
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3) Let P denotes the populahon buy elsthins onine clo We know rhat hhe margin of eya for con shruchn a loo Confidence nervativen hat E 4 0 0 3 4 0 03 2- n(1645) x 80 x 0 2 ov, 0 0 3 0v8 07 n is al ways an integer and n 481 07 So n 48 2 482 adulhs mub) He ne no pio in formahon s given Now 0 V 4 00 3 Vn 4 0 0 3 Y) 2 0 0 3 ov, n 751.67 As n is al was an inhe a ev and 7567, S

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