document.write( "Question 450299: Assume that 67% of the cars on a particular freeway are traveling faster than 70 miles per hour. A random sample of 15 cars was observed under normal driving conditions with no police car in sight. What is the probability that 8 or more of them were going faster than 70 miles per hour? \n" ); document.write( "
Algebra.Com's Answer #309866 by stanbon(75887) ![]() You can put this solution on YOUR website! Assume that 67% of the cars on a particular freeway are traveling faster than 70 miles per hour. A random sample of 15 cars was observed under normal driving conditions with no police car in sight. What is the probability that 8 or more of them were going faster than 70 miles per hour? \n" ); document.write( "----------------------- \n" ); document.write( "Binomial Problem with n = 15 and p = 0.67 \n" ); document.write( "--- \n" ); document.write( "P(8<= x <=15) = 1-P(0<= x <=7) = 1 - binomcdf(15,0.67.7) = 0.9163 \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============ \n" ); document.write( " |