Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1004 and x = 575 who said "yes." Use a 90% confidence level. | Click the icon to view a table of z scores. ..... a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)
Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1004 and x = 575 who said "yes." Use a 90% confidence level. | Click the icon to view a table of z scores. ..... a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)
MATLAB: An Introduction with Applications
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Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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
Transcribed Image Text:This image displays a portion of the standard normal distribution table, often used in statistics to find the probability that a standard normal random variable is less than a given value. The table is organized with the z-scores in the leftmost column and probability values corresponding to the cumulative area under the curve for each z-score across subsequent columns.
### Breakdown of the Table:
- **Leftmost Column (z):** This column indicates the integer and first decimal place of the z-score.
- **Top Row (.00 to .06):** These columns represent the second decimal place of the z-score.
- **Table Values:** Each cell in the table contains the cumulative probability for the z-score calculated by combining the row and column z-values. For instance, to find the cumulative probability for a z-score of 0.05, locate the row for z = 0.0 and the column for .05. The intersection gives a probability of 0.5199.
### Example Usage:
To find the probability of z being less than or equal to 1.12:
1. Locate the row for z = 1.1.
2. Move to the column under .02.
3. The intersection, 0.8686, is the cumulative probability for z ≤ 1.12.
This table allows for quick lookup of z-scores and their corresponding cumulative probabilities, essential for statistical calculations involving normal distributions.
![Use the sample data and confidence level given below to complete parts (a) through (d).
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1004 and x = 575 who said "yes." Use a 90% confidence level.
[Icon for a table of z scores]
a) Find the best point estimate of the population proportion p.
[Checkbox for input]
(Round to three decimal places as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6a5ed048-7cb6-4762-ac8c-8a5f0236d686%2Fe6d0c672-fdab-4f7f-9ab2-c76ac1b7056e%2Fjvw35sd_processed.png&w=3840&q=75)
Transcribed Image Text:Use the sample data and confidence level given below to complete parts (a) through (d).
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1004 and x = 575 who said "yes." Use a 90% confidence level.
[Icon for a table of z scores]
a) Find the best point estimate of the population proportion p.
[Checkbox for input]
(Round to three decimal places as needed.)
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