The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts a) through d) below. Click the icon to view the table of critical t-values. ….. (a) Determine a point estimate for the population mean. A point estimate for the population mean is 5.05 (Round to two decimal places as needed.) 5.05 5.02 5.29 5.72 4.58 4.76 OA. There is 95% confidence that the population mean pH of rain water between between and OB. There is a 95% probability that the true mean pH of rain water is between OC. If repeated samples are taken, 95% of them will have a sample pH of rain water between and 5.24 4.74 4.56 (b) Construct and interpret a 95% confidence interval for the mean pH of rainwater. Select the correct choice below and fill in the answer boxes to complete your choice. (Use ascending order. Round to two decimal places as needed.) 4.80 5.19 5.68 and C

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts (a) through (d) below.

**Data:**
5.05, 5.72, 5.24, 4.80  
5.02, 4.58, 4.74, 5.19  
5.29, 4.76, 4.56, 5.68  

**(a) Determine a point estimate for the population mean.**

A point estimate for the population mean is **5.05**.  
(Round to two decimal places as needed.)

**(b) Construct and interpret a 95% confidence interval for the mean pH of rainwater. Select the correct choice below and fill in the answer boxes to complete your choice.**
(Use ascending order. Round to two decimal places as needed.)

- O A. There is 95% confidence that the population mean pH of rainwater is between \_\_\_ and \_\_\_.
- O B. There is a 95% probability that the true mean pH of rainwater is between \_\_\_ and \_\_\_.
- O C. If repeated samples are taken, 95% of them will have a sample pH of rainwater between \_\_\_ and \_\_\_.

(Note: The specific bounds for the confidence interval are not provided in the text and need to be calculated based on the data and appropriate formulae using the sample mean and standard deviation, along with the t-distribution critical values.)
Transcribed Image Text:The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts (a) through (d) below. **Data:** 5.05, 5.72, 5.24, 4.80 5.02, 4.58, 4.74, 5.19 5.29, 4.76, 4.56, 5.68 **(a) Determine a point estimate for the population mean.** A point estimate for the population mean is **5.05**. (Round to two decimal places as needed.) **(b) Construct and interpret a 95% confidence interval for the mean pH of rainwater. Select the correct choice below and fill in the answer boxes to complete your choice.** (Use ascending order. Round to two decimal places as needed.) - O A. There is 95% confidence that the population mean pH of rainwater is between \_\_\_ and \_\_\_. - O B. There is a 95% probability that the true mean pH of rainwater is between \_\_\_ and \_\_\_. - O C. If repeated samples are taken, 95% of them will have a sample pH of rainwater between \_\_\_ and \_\_\_. (Note: The specific bounds for the confidence interval are not provided in the text and need to be calculated based on the data and appropriate formulae using the sample mean and standard deviation, along with the t-distribution critical values.)
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