a.Find z such that 66% of the standard normal curve lies between −z and z. (Round your answer to two decimal places.) b.Find z such that 13% of the area under the standard normal curve lies to the right of z. (Round your answer to two decimal places.)

Find an approximate z-score such that 17% of the total area is to the right of z.  Find an approximate z-score such that 42% of the total area is to the left of z.

Find the area under the Normal curve between the two z-values. Shade the area of theregion.

​(a) The figure to the right represents the normal curve with μ=266 days and σ=16 days. The area to the left of X=245 is 0.0947. Provide two interpretations of this area.   Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. ​(Type integers or​ decimals.)   A. The proportion of human pregnancies that last more than nothing days is nothing.   B. The proportion of human pregnancies that last less than nothing days is nothing.