1. Use the TI-84 Plus calculator to find the-score for which the area to its left is 0.78. Round the answer to two decimal places. 2. Use the TI-84 Plus calculator to find the z-scores that bound the middle 72% of the area under the standard normal curve. Enter the answers in ascending order and round to two decimal places.The -scores for the given area are----- and------.   3.A normal population has mean    u=7    and standard deviation o=5 (a) What proportion of the population is less than 19 (b) What is the probability that a randomly chosen value will be greater than 4 Round the answers to four decimal places.

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