A state legislator wants to determine whether his voters' performance rating (0-100) has changed from last year to this

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A State Legislator Wants To Determine Whether His Voters Performance Rating 0 100 Has Changed From Last Year To This 1 (16.03 KiB) Viewed 26 times

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A state legislator wants to determine whether his voters' performance rating (0-100) has changed from last year to this year. The following table shows the legislator's performance from the same ten randomly selected voters for last year and this year. Use this data to find the 90 % confidence interval for the true difference between the population means. Assume that the populations of voters' performance ratings are normally distributed for both this year and last year. Rating (last year) 59 48 56 56 86 64 50 72 81 66 Rating (this year) 77 57 54 60 84 93 65 60 87 77 Step 2 of 4: Calculate the sample standard deviation of the paired differences. Round your answer to six decimal places Answer Copy Data
Step 3 of 4: Calculate the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places Copy Data