If a quadratic function has a line of symmetry of x = 3 and one x-intercept of (10, 0), what are the roots of the quadratic equation?
-4 and 10
-7 and 10
2 and -10
3 and 10

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The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample