What is the z-score of 80% confidence1 point1.281.581.35

how to fine this. The confidence level is 99%, so the Z-score is approximately 2.576 (you can find this value in a standard Z-table or using a calculator)

First, we need to find the Z-score that corresponds to a 94% confidence level. The Z-score for a 94% confidence level is approximately 1.88 (you can find this value in a standard Z-table or using a calculator).

What is the mean of the z-scores?Question 2Answera.0.5b.0c.1

Standard Normal DistributionA random variable X is normally distributed with a mean (µ) of 80 and standard deviation (σ) of 10. If the z-score of a point on X is -1.5, then what is the value of that point on X?65957293

Find the critical value z/α2 needed to construct a confidence interval with level 80%.Round the answer to two decimal places.The critical value for the 80% confidence level is .