To help students improve their reading , a school district decides to implement a reading program. It is to be administered to the bottom 5% of the students in the district based on the scores on a reading achievement exam. If the average score of the students in the district is 122.6, find the cutoff score that will make a student eligible for the program. The standard deviation is 18. Assume the variable is normally distributed.
Asked By Temidayo On 08/05/2019 06:50
Answer is 93
We will use the Z table to find the answer. For 0.05, the Z value is -1.645
Z= (x-u)/standard deviation
Z value here is -1.645, u = 122.6 and standard deviation is 18. We insert the values in the above equation to get x as 93
Answered On 08/20/2019 18:47