Consider a normal distribution curve where the middle 45 % of the area under the curve lies above the interval ( 8 , 18 ). Use this information to find the mean, μ , and the standard deviation, σ , of the distribution.

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x