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In: Statistics and Probability

Given the data set (treatments 1 to 4) with respective outcome, what is the R code...

Given the data set (treatments 1 to 4) with respective outcome, what is the R code I can use to Find a 95 percent confidence interval on the mean strength of the 4 techniques. Also for finding a 95 percent confidence interval on the difference in means. (i.e 1 vs 3 , 2 vs 4 etc)

strength group
3129 1
3000 1
2865 1
2890 1
3200 2
3300 2
2975 2
3150 2
2800 3
2900 3
2985 3
3050 3
2600 4
2700 4
2600 4
2765 4

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