Construct a 90% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone. Round the answers to at least three decimal places. A 90% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is Answer PT 2

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Construct a 90% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone. Round the answers to at least three decimal places. A 90% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is Answer PT 2
Smartphone: Among 240 smartphone owners aged 18-24 surveyed, 108 said their
phone was an Android phone.
Part 1 of 3
(a) Find a point estimate for the proportion of smartphone owners aged 18-
24 who have an Android phone. Round the answer to at least three decimal
places.
The point estimate for the proportion of smartphone owners aged 18-24 who
have an Android phone is 45
Alternate Answer:
The point estimate for the proportion of smartphone owners aged 18-24
who have an Android phone is 0.450.
Part: 1 / 3
Part 2 of 3
(b) Construct a 90% confidence interval for the proportion of smartphone
owners aged 18-24 who have an Android phone. Round the answers to at
least three decimal places.
A 90% confidence interval for the proportion of smartphone owners
aged 18-24 who have an Android phone is <p<0.
Transcribed Image Text:Smartphone: Among 240 smartphone owners aged 18-24 surveyed, 108 said their phone was an Android phone. Part 1 of 3 (a) Find a point estimate for the proportion of smartphone owners aged 18- 24 who have an Android phone. Round the answer to at least three decimal places. The point estimate for the proportion of smartphone owners aged 18-24 who have an Android phone is 45 Alternate Answer: The point estimate for the proportion of smartphone owners aged 18-24 who have an Android phone is 0.450. Part: 1 / 3 Part 2 of 3 (b) Construct a 90% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone. Round the answers to at least three decimal places. A 90% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is <p<0.
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