Please include R codes in solution In a certain European country, 23% of the female adult...
In a certain country, 20% of the female adult population smoke regularly. In a random sample of 800 adults, what is the probability that: a) less than 150 are smokers? Use the normal approximation to the binomial. b) 200 or more are smokers? Use the normal approximation to the binomial. c) Find answers to (a) and (b) using the binomial distribution and R. Copy and paste the code and the answer into your document.
please tell me if its a z test ke t test and why it is :)
thanks!
CHECK ANSWERS! You should use a Z test because of the large sample size 30 < and we know the mean and the standard deviation. 6. The Graded Naming Test (GNT) requires respondents to name objects in a set of 30 black-and-white drawings. The test is often used to detect brain damage in the UK. The test begins with easy words like kangaroo,...
This Test: 45 pts pos Find the indicated z-scores shown in the graph Click to view.page 1 of the Standard Normal Table The z-scores are Use a comma to separate answers as needed Round to two decimal places as needed ) Find the indicated probability using the standard normal distribution. P(z > 2.02) Click here to view page 1 of the standard normal table, Click here to view page 2 of the standard normal table P(Z> 2.02)(Round to four decimal...