help woth part 2 please **Smartphone Study**Among 244 smartphone owners aged 18-24 surveyed, 106 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 \( \frac{106}{244} \).Alternate Answer:The point estimate for the proportion of smartphone owners aged 18-24 who have an Android phone is 0.434.### Part 2 of 3**(b) Construct a 98% 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 98% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is \( [ \text{lower bound} < p < \text{upper bound} ] \).**Note:** The third part is not shown in the image. ### Explanation for Educational Website:This exercise is investigating the proportion of smartphone owners aged 18-24 who use Android phones. In Part 1, a point estimate is calculated by dividing the number of Android users by the total number of surveyed individuals. This point estimate is a sample proportion that gives a specific value of the population parameter based on the sample data.In Part 2, construction of a confidence interval is requested. A confidence interval gives a range of plausible values for the population parameter. It also accounts for the error margin expected in the sample proportion, providing users a better understanding through the range rather than a single point estimate.By following these steps, one can understand not just the point estimate, but also the precision of that estimate through the confidence interval.

Answered: Image /qna-images/answer/b1295d80-63e0-4e9d-850f-e2aa019176eb.jpg

Smartphone: Among 244 smartphone owners aged 18-24 surveyed, 106 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 434 Alternate Answer: The point estimate for the proportion of smartphone owners aged 18-24 who have an Android phone is 0.434. Part: 1/3 Part 2 of 3 (b) Construct a 98% 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 98% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is

Smartphone: Among 244 smartphone owners aged 18-24 surveyed, 106 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 434 Alternate Answer: The point estimate for the proportion of smartphone owners aged 18-24 who have an Android phone is 0.434. Part: 1/3 Part 2 of 3 (b) Construct a 98% 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 98% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

help woth part 2 please

**Smartphone Study**

Among 244 smartphone owners aged 18-24 surveyed, 106 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 \( \frac{106}{244} \).

Alternate Answer:

The point estimate for the proportion of smartphone owners aged 18-24 who have an Android phone is 0.434.

### Part 2 of 3

**(b) Construct a 98% 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 98% confidence interval for the proportion of smartphone owners aged 18-24 who have an Android phone is \( [ \text{lower bound} < p < \text{upper bound} ] \).

**Note:** The third part is not shown in the image.

### Explanation for Educational Website:

This exercise is investigating the proportion of smartphone owners aged 18-24 who use Android phones. In Part 1, a point estimate is calculated by dividing the number of Android users by the total number of surveyed individuals. This point estimate is a sample proportion that gives a specific value of the population parameter based on the sample data.

In Part 2, construction of a confidence interval is requested. A confidence interval gives a range of plausible values for the population parameter. It also accounts for the error margin expected in the sample proportion, providing users a better understanding through the range rather than a single point estimate.

By following these steps, one can understand not just the point estimate, but also the precision of that estimate through the confidence interval.

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