Please answer urgently In a test, John was able to answer 15 correct out of 40 questions. Beth was able to answer 24 questions correctly out of 50. Micheal said John has a better score than Beth is he correct ?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

Write the following as a base and exponent

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2