FAQ: Hypothesis Testing with R - Designing an Experiment

This community-built FAQ covers the “Designing an Experiment” exercise from the lesson “Hypothesis Testing with R”.

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I’ve defined and received an (correct) output for mean_retriever_1 , but I get the message “Did you define mean_retriever_1?”

# load data



# calculate mean_retriever_l and mean_doodle_l here:

mean_retriever_1 <- mean(retriever_lengths)

mean_doodle_1 <- mean(doodle_lengths)





Figured it out it’s an l not a 1