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.\begin{tabular}{llll}5.05 & 5.72 & 4.62 & 4.80 \\5.02 & 4.57 & 4.74 & 5.19 \\4.61 & 4.76 & 4.56 & 5.30\end{tabular}(a) Determine a point estimate for the population mean.A point estimate for the population mean is □ (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.)A. There is a 95% probability that the true mean pH of rain water is between □ and □B. If repeated samples are taken, 95% of them will have a sample pH of rain water between □ and □C. There is 95% confidence that the population mean pH of rain water is between □ and □
Q. 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.\begin{tabular}{llll}5.05 & 5.72 & 4.62 & 4.80 \\5.02 & 4.57 & 4.74 & 5.19 \\4.61 & 4.76 & 4.56 & 5.30\end{tabular}(a) Determine a point estimate for the population mean.A point estimate for the population mean is □ (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.)A. There is a 95% probability that the true mean pH of rain water is between □ and □B. If repeated samples are taken, 95% of them will have a sample pH of rain water between □ and □C. There is 95% confidence that the population mean pH of rain water is between □ and □
Calculate Mean: Calculate the sample mean for the pH data provided. Add all the pH values and divide by the number of samples 12.
Round Mean: Round the calculated mean to two decimal places as required.
Calculate Standard Deviation: Calculate the sample standard deviation. First, find the deviations from the mean, square them, sum them, divide by (n−1), and take the square root.
Find Critical t-Value: Use the t-distribution to find the critical t-value for a 95% confidence interval with 11 degrees of freedom (n−1).
Calculate Margin of Error: Calculate the margin of error using the t-value and the standard deviation.
Construct Confidence Interval: Construct the 95% confidence interval by adding and subtracting the margin of error from the sample mean.
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