Use the Iris Dataset which can be loaded into the Rstudio environmentiris_exams.csv(click to download). The questions below concentrate on lesson 11.

• Answer the following questions in the report for full credit:
• T-test: Start with the clean data set from Question 1 (i.e. the data set after data screening)
• Null Hypothesis H0:Length has no effect on Species (Setosa & versicolor Only). That is to say that the difference between the observed Sepal.Length values for various Species are not statistically different-
• Alternate Hypothese Ha:Length has some effect on Species (Setosa & versicolor Only). That is to say that the difference between the observed Sepal.Length values for various Species are in fact different from each other.

1. Run a two-sided t-test to compare the variables Sepal.Length of the Species (Setosa & versicolor Only) from thecleaniris dataset.
2. Capture a summary.
3. Explain what confidence interval tell you.
4. Provide an interpretation of the results. Support your response with results captured from performing a t-test.

I need answers (R code) for all the above 6 questions.

Use the following link for the dataset:

https://drive.google.com/file/d/1x2FiDIMtzgM2dvSW53s3oltPBQN6mSda/view?usp=sharing

Thanks for your help!