P(?1 ? X ?1.5); X is Normal (2, 4).
Find the probability for the given random variable.
0.2217
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Solve the problem.For the study described below, identify the sample statistic.A bank manager wants to know the average amount of time customers of his bank have to wait in line. 300 customers were polled and asked their average wait time at the bank.
A. The percentage of dissatisfied customers among all of the bank's customers. B. The average wait time for all of the bank's customers C. The 300 people polled D. The average wait time for the 300 customers polled
Solve the problem.A pipe is cut into two pieces, with one piece 22 feet longer than the other. The pipe was 72 feet long before it was cut. How long is each piece?
A. 72 feet, 50 feet B. 47 feet, 50 feet C. 94 feet, 50 feet D. 47 feet, 25 feet
Divide. Write the result in standard form.
A. 8 + 3i B. -8 + 3i C. 3 - 8i D. 8 - 3i
Write the sum or difference as a product containing only sines and/or cosines.cos 
+ cos 
A. 2 sin(4?) sin ?
B. 2 cos(4?) cos 
C. 2 sin(4?) sin 
D. 2 cos(4?)