Listed below are the lead concentrations measured in different Ayurveda medicines. (Ayurveda is a traditional medical system commonly used in India). Find the mean and standard deviation of the...

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Extracted text: Listed below are the lead concentrations measured in different Ayurveda medicines. (Ayurveda is a traditional medical system commonly used in India). Find the mean and standard deviation of the sample. Round to two,decimal places. 3.0 6.5 6.0 5.5 20.5 7.5 12.0 20.5 11.5 17.5 outer Mean = Round to TWO decimal places. BE CAREFUL ROUNDING! Standard deviation = Round to TWO decimal places. BE CAREFUL ROUNDING!


Extracted text: Use the data as given in the problem and answer the following questions. The data shows the exam score and the time in minutes that a student spent on the exam. UPLOAD YOUR RESPONSE to Canvas. Paired Data x (Exam Score) 95 80 92 61 83 y (Time in Minutes)86 75 95 67 55 80 Make sure to answer all the questions. 1. Create a scatter gram. (I suggest that the x-axis range from 60 to 100 in increments of 5 and the y-axis should start from 50 and go to 100 in increments of 5) 2. Find correlation coefficientr (Round to three digits.) 3. Use the Critical Value for Correlation Coefficient Table to determine if there is evidence for a linear correlation. Assume a = 0.5 (Write down the critical value from the table and answer yes or no) 4. Find the regression equation. (round coefficients to three decimal places) 5. Graph the regression equation on your scatter plot. 6. If a student's exam score (x) is 89, what does the least-squares equation forecast for the minutes she spent on the exam (y)? 75