math 221 week 6 lab
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MATH 221 Week 6 lab100% Correct AnswersOpen the link below to get %100 Correct answer:http://devryfinalexams.com/products/math-221-week-6-lab/Product DescriptionStatistical Concepts: Data Simulation Discrete Probability Distribution Confidence IntervalsCalculations for a set of variables Open the class survey results that were entered into the MINITAB worksheet. We want to calculate the mean for the 10 rolls of the die for each student in the class. Label the column next to die10 in the Worksheet with the word mean. Pull up Calc > Row Statistics and select the radio-button corresponding to Mean. For Input variables: enter all 10 rows of the die data. Go to the Store result in: and select the mean Click OK and the mean for each observation will show up in the Worksheet. We also want to calculate the median for the 10 rolls of the die. Label the next column in the Worksheet with the word median. Repeat the above steps but select the radio-button that corresponds to Median and in the Store results in: text area, place the medianCalculating Descriptive Statistics Calculate descriptive statistics for the mean and median columns that where created above. Pull up Stat > Basic Statistics > Display Descriptive Statistics and set Variables: to mean and median. The output will show up in your Session Window. Print this information.Calculating Confidence Intervals for one Variable Open the class survey results that were entered into the MINITAB worksheet. We are interested in calculating a 95% confidence interval for the hours of sleep a student gets. Pull up Stat > Basic Statistics > 1-Sample t and set Samples in columns: to Sleep. Click the OK button and the results will appear in your Session Window. We are also interested in the same analysis with a 99% confidence interval. Use the same steps except select the Options button and change the Confidence level: to 99.Short Answer Writing AssignmentAll answers should be complete sentences.1. When rolling a die, is this an example of a discrete or continuous random variable? Explain your reasoning.2. Calculate the mean and standard deviation of the probability distribution created by rolling a die. Either show work or explain how your answer was calculated.3. Give the mean for the mean column of the Worksheet. Is this estimate centered about the parameter of interest (the parameter of interest is the answer for the mean in question 2)?4. Give the mean for the median column of the Worksheet. Is this estimate centered about the parameter of interest (the parameter of interest is the answer for the mean in question 2)?5. Give the standard deviation for the mean and median column. Compare these and be sure to identify which has the least variability?6. Based on questions 3, 4, and 5 is the mean or median a better estimate for the parameter of interest? Explain your reasoning.7. Give and interpret the 95% confidence interval for the hours of sleep a student gets.8. Give and interpret the 99% confidence interval for the hours of sleep a student gets.9. Compare the 95% and 99% confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs.MATH 221 Week 6 lab100% Correct AnswersOpen the link below to get %100 Correct answer:http://devryfinalexams.com/products/math-221-week-6-lab/TRANSCRIPT
MATH 221 Week 6 lab100% Correct AnswersOpen the link below to get %100 Correct answer:http://devryfnalexams.com/products/math-221-week-6-lab/Product DescriptionStatistical Concepts Data Si!ulation Discrete Probabilit" Distribution Con#idence $nter%alsCalculations #or a set o# %ariables &pen t'e class sur%e" results t'at were entered into t'e M$($TA) works'eet* We want to calculate t'e !ean #or t'e 10 rolls o# t'e die #or eac' student in t'e class* +abel t'e colu!n ne,t to die10 in t'e Works'eet wit' t'e word !ean* Pull up Calc - .ow Statistics and select t'e radio/button correspondin0 to Mean* 1or $nput %ariables enter all 10 rows o# t'e die data* 2o to t'e Store result in and select t'e !ean Click &3 and t'e !ean #or eac' obser%ation will s'ow up in t'e Works'eet* We also want to calculate t'e !edian #or t'e 10 rolls o# t'e die* +abel t'e ne,t colu!n in t'e Works'eet wit' t'e word !edian* .epeat t'e abo%e steps but select t'e radio/button t'at corresponds to Median and in t'e Store results in te,t area4 place t'e !edianCalculatin0 Descripti%e Statistics Calculate descripti%e statistics #or t'e !ean and !edian colu!ns t'at w'ere created abo%e* Pull up Stat - )asic Statistics - Displa" Descripti%e Statistics and set 5ariables to !ean and !edian* T'e output will s'ow up in "our Session Window* Print t'is in#or!ation*Calculatin0 Con#idence $nter%als #or one 5ariable &pen t'e class sur%e" results t'at were entered into t'e M$($TA) works'eet* We are interested in calculatin0 a 67% con#idence inter%al #or t'e 'ours o# sleep a student 0ets* Pull up Stat - )asic Statistics - 1/Sa!ple t and set Sa!ples in colu!ns to Sleep* Click t'e &3 button and t'e results will appear in "our Session Window* We are also interested in t'e sa!e anal"sis wit' a 66% con#idence inter%al* 8se t'e sa!e steps e,cept select t'e &ptions button and c'an0e t'e Con#idence le%el to 66*S'ort Answer Writin0 Assi0n!entAll answers s'ould be co!plete sentences*1* W'en rollin0 a die4 is t'is an e,a!ple o# a discrete or continuous rando! %ariable9 :,plain "our reasonin0*2* Calculate t'e !ean and standard de%iation o# t'e probabilit" distribution created b" rollin0 a die* :it'er s'ow work or e,plain 'ow "our answer was calculated*;* 2i%e t'e !ean #or t'e !ean colu!n o# t'e Works'eet* $s t'is esti!ate centered about t'e para!eter o# interest 97* 2i%e t'e standard de%iation #or t'e !ean and !edian colu!n* Co!pare t'ese and be sure to identi#" w'ic' 'as t'e least %ariabilit"96* )ased on =uestions ;4 ?4 and 7 is t'e !ean or !edian a better esti!ate #or t'e para!eter o# interest9 :,plain "our reasonin0*@* 2i%e and interpret t'e 67% con#idence inter%al #or t'e 'ours o# sleep a student 0ets*A* 2i%e and interpret t'e 66% con#idence inter%al #or t'e 'ours o# sleep a student 0ets*6* Co!pare t'e 67% and 66% con#idence inter%als #or t'e 'ours o# sleep a student 0ets* :,plain t'e di##erence between t'ese inter%als and w'" t'is di##erence occurs*MATH 221 Week 6 lab100% Correct AnswersOpen the link below to get %100 Correct answer:http://devryfnalexams.com/products/math-221-week-6-lab/