Please solve

The IQ scores are normally distributed with mean 100 and standard deviation 11. (a) What percent of the population has an IQ score of 78 or more? (b) Find the 90th percentile of IQ scores. Click here to view page 1 of the table of areas under the standard normal curve. Click here to view page 2 of the table of areas under the standard normal curve. (a) The percent of the population with scores greater than or equal to 78 is %. (Type an integer or decimal rounded to two decimal places as needed.) Find the value of o for a normal random variable X having u = 8, if Pr(X s 10) = 0.9938. Click the icon to view the table of areas under the standard normal curve. =(Type an integer or a decimal rounded to four decimal places as needed.) Find the area of the shaded region under the given normal curve. J = 8, o = 1. Use the table. 0.6- z A(Z) Z A(Z) Z A(z) 0.5- -1.5 0.0668 - 0.25 0.4013 0.5 0.6915 0.4 1 0.1587 0 0.5000 0.8413 0.3 -0.5 0.3085 0.25 0.5987 1.5 0.9332 0.2 0.1- 20.1 65 7 7 5 8 8 5 9 9 5 10 -0.2 The area of the region under the curve between x =7 and x = 9.5 is