using R please provide the code needed to run a hypothesis test using the iris data set, conduct a hypothesis test to determine if the true mean of Sepal.Width for "virginica" species is 3.05 or not. it is given that the true variance is 0.19. use a = 0.05. also use the z.test() function

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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using R please provide the code needed to run a hypothesis test using the iris data set, conduct a hypothesis test to determine if the true mean of Sepal.Width for "virginica" species is 3.05 or not. it is given that the true variance is 0.19. use a = 0.05. also use the z.test() function

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