Mathematics, 07.07.2021 04:50 yoboi33

Suppose that the scores of a reference population on the Wechsler Intelligence Scale for Children (WISC) can be modeled by a normal distribution with mean 101 and standard deviation 14. Question 1. What is the probability that a child has a WISC score below 82.4? (use 4 decimal places in your answer)

Question 2. What is the probability that a child has a WISC score above 138.4? (use 4 decimal places in your answer)

Incorrect: Your answer is incorrect.

Question 3. What is the probability that a child has a WISC score between 101 and 119.6? (use 4 decimal places in your answer)

Question 4. What are the quartiles of WISC scores? ( HINT: First Quartile Q1= Find a WISC score such that 25% of children have scored below that score. Third Quartile Q3= Find a WISC score such that 75% of students have scored below that score)
Q1 =

Q3 =

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Suppose that the scores of a reference population on the Wechsler Intelligence Scale for Children (W...