Please help, what are the z-scores of these

Question

1.Find the z-score close to 11.15 percentile.

2. Find the z-score close to 25.18 percentile.

3. Find the percentile z-score close to 48.27 percentile.

4. Find the z-score close to 62.31 percentile.

5. Find the z-score close to 78.35 percentile.

6.Find the z-score close to 84.93 percentile

Answer 1

We can find all of these using the invNorm(decimal) on the TI calculator or an online statistics calculator.

1. invNorm(.1115) = -1.219

2. invNorm(.2518) = -.6688

3. invNorm(.4827) = -.0434

4. invNorm(.6231) = .3136

5. invNorm(.7835) = .7841

6. invNorm(.8493) = 1.0334