Answer:
24.18 is the required score to get into the top 15%.
26.03 is required to get into the 92nd percentile.
Step-by-step explanation:
On a TI-84 calculator:
You can use the invNorm function to calculate the point at a given percentage on a normal model
invNorm(area, mean, sd, tail)
Plug in the values and calculate:
invNorm(0.15, 19, 5, RIGHT)
24.18 is the required score to get into the top 15%.
92nd percentile means that this score is better than 92% of scores
Plug in values and calculate:
invNorm(0.92, 19, 5, LEFT)
26.03 is required to get into the 92nd percentile.
