Homework 4.Answers - Psyc 60 Statistics Homework 4 Remember to follow the homework guidelines listed in the course syllabus Homework 4 is due at the

# Homework 4.Answers - Psyc 60 Statistics Homework 4 Remember...

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Psyc 60 - StatisticsHomework 4Remember to follow the homework guidelines listed in the course syllabus. Homework 4 is due at the beginning of class on Wednesday, May 1st.----------------------------------------------------------------------------------------------------------------1.What proportion of a normal distribution is located between each of the following z-score boundaries?a.z = -0.50 and z = 0.05 0.1915 + 0.0199 = 0.2114b.z = -0.90 and z = 0.90 0.3159 + 0.3159 = 0.6318c.z = -1.50 and z = 1.50 0.4332 + 0.4332 = 0.86642.For a normal distribution with a mean of 80 and a standard deviation of 20, find the proportion of the population corresponding to each of the following scores.a.Scores greater than 85; z = 0.25; 0.4013b.Scores less than 100; z = 1; 0.8413c.Scores between 70 and 80 z = -0.5; 0.19153.For each of following statements, sketch a normal curve and shade the target area. Then, find the proportion of the total area identified by each statement.a.Above a z-score of 1.80 0.0359b.Between the mean and a z-score of -0.43. 0.1664c.Below a z-score of -3.00. 0.99874.The number of times Peter gets rejected when out at bar and trying to pick up women is  • • • 