The random variable X has the probability distribution table shown below. x P(x = x) -2 a -1 a 0 0.4 (a) Calculate P(X ≥ 0) and P(X < 0). P(X ≥ 0) = P(X < 0) = 1 0.1 2 0.1

Random Phenomenon: It takes a certain artist between 30 and 60 minutes to make a sketch for new work, depending on what he wants to portray there. Measure how long it will take for the artist to sketch a painting of your choice. Step 2 of 3: What is the maximum value of the random variable X? Input 'NoMax' if the maximum does not exist. Answer 2 Points Answered NoMax Keypad Keyboard Shortcuts

A fair coin is tossed three times. Let X be number of heads. (1) Write out the sample space. (2) Find P(X=2) (3) Find E(X)

binomial experiment with n=6 trials where the probability of success on a single trial is p=.20 find P(0< r greater than or equalt to 2).

Computing the Z-test Statistic The State College is evaluating a new English composition course for freshmen. A random sample of n = 25 freshmen is selected from the State College. All 25 students are placed in the new English composition course during their first semester. One year later, a writing sample is obtained for each student and their writing samples are graded using a standardized evaluation technique. The average score for the sample is M= 76. For the general population of the State College, writing scores form a normal distribution with a mean = 70 and a standard deviation = 20.  Please calculate the appropriate hypothesis test using all four steps?

Select correct choice &