On this question I will be grading your work, not your answe…

On this question I will be grading your work, not your answer.  At the end of this Graded Practice you will scan all your work into a single document and upload it into the last question. SHOW ALL WORK as indicated in the Video Lesson. Find the mean of the following grouped frequency table: Group Frequency 0.5 – 3.5 7 3.5 – 6.5 3 6.5 – 9.5 5 9.5 – 12.5 12 12.5 – 15.5 4 15.5 – 18.5 2   Type GRADE MY WORK is this box:  The mean is   (Round to 3 decimal places as needed) NOTE:  You will lose points if you do not show all work and calculations on your paper (as demonstrated in the video lesson).  

On this question I will be grading your work, not your answe…

On this question I will be grading your work, not your answer.  At the end of this Graded Practice you will scan all your work into a single document and upload it into the last question. SHOW ALL WORK as indicated in the Video Lesson. Draw and Shade the indicated area under a Normal Distribution Curve for each of the questions below. Show ALL calculations (including z-scores and how the area(s) under the curve are combined) Kevin uses his phone everyday.  His usage is normally distributed with a mean of 28 minutes and a standard deviation of 8 minutes. Type GRADE MY WORK is this box:  a.  Find the probability that on a particular day, Kevin uses his phone for less than 30 minutes. b.  Find the probability that on a particular day, Kevin uses his phone for more than 35 minutes. c.  Find the probability that on a particular day, Kevin uses his phone between 24 and 34 minutes. d.  Find the probability that on a particular day, Kevin uses his phone for less than 18 minutes. NOTE:  You will lose points if you do not show all work and calculations on your paper (as demonstrated in the video lesson).  

On this question I will be grading your work, not your answe…

On this question I will be grading your work, not your answer.  At the end of this Graded Practice you will scan all your work into a single document and upload it into the last question. SHOW ALL WORK as indicated in the Video Lesson. Given the following data set:    3.5    3.3    4.6    4.1    3.0    3.2    4.3    3.8    3.1 Type GRADE MY WORK is this box:  a.  The mean is     (Round to 3 decimal places as needed) b.  The median is   c.  The mode(s) is(are)   (Enter No Mode if there is not a mode.  If there is more than one mode, separate by using a comma.) NOTE:  You will lose points if you do not show all work and calculations on your paper (as demonstrated in the video lesson).  

EXTRA CREDIT         (3 POINTS) SHOW ALL WORK as indicated…

EXTRA CREDIT         (3 POINTS) SHOW ALL WORK as indicated in the Video Lesson. Draw and Shade the indicated area under a Normal Distribution Curve for each of the questions below. Show ALL calculations (including z-scores and how the area(s) under the curve are combined) NO WORK = NO POINTS A manufacturing process produces a critical part of average length 120 ​millimeters, with a standard deviation of 2 millimeters.  All parts differ by more than 5 millimeters from the mean must be rejected. Assume a normal distribution. What percentage of the parts must be​ rejected, on​ average?   

Use your Graphing Calculator to find the mean and standard d…

Use your Graphing Calculator to find the mean and standard deviation of the following grouped frequency table.   Group Frequency 44.5 – 49.5 12 49.5 – 54.5 7 54.5 – 59.5 8 59.5 – 64.5 10 64.5 – 69.5 7 69.5 – 74.5 9 74.5 – 79.5 2   The mean is   (Round to 3 decimal places as needed) The standard deviation is   (Round to 3 decimal places as needed)