Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs are by a female artist. She takes an SRS of 50 songs on her phone and finds that 20 of the songs sampled are by a female artist. Based on this sample, which of the following is a 99% confidence interval for the proportion of songs on her phone that are by a female artist? Choose 1 answer: 20(30) 20 + 1.96 50 20(30) 20 + 2.576V 50 0.40(0.60) 0.40 1.96 50

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Author:Erwin Kreyszig
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Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs are by a
female artist. She takes an SRS of 50 songs on her phone and finds that 20 of the songs sampled are by a female
artist.
Based on this sample, which of the following is a 99% confidence interval for the proportion of songs on her
phone that are by a female artist?
Choose 1 answer:
20(30)
1.961
20 +
50
20(30)
20 + 2.576
B
50
0.40(0.60)
0.40 1.961/
50
Transcribed Image Text:Della has over 500 songs on her mobile phone, and she wants to estimate what proportion of the songs are by a female artist. She takes an SRS of 50 songs on her phone and finds that 20 of the songs sampled are by a female artist. Based on this sample, which of the following is a 99% confidence interval for the proportion of songs on her phone that are by a female artist? Choose 1 answer: 20(30) 1.961 20 + 50 20(30) 20 + 2.576 B 50 0.40(0.60) 0.40 1.961/ 50
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