What would be the critical value for a left-tailed test with α = 0.01? (Remember to use the z-score table)

What is the normalized z-score for a data point that has a value of 50 if the mean (Mu) is 560 and sigma is 55? This data point is taken from a total of 800 data point values .

The mean test score for a simple random sample of n=100 students was =80. The population standard deviation of test scores is σ=15. Construct a 95% confidence interval for the population mean test score μ.

The sample mean of depression scores of 16 fifth graders was 4.4 with standard deviation of 8. If the population mean of this depression score is 6, what is the calculated t score for this sample?

Explain the t-test as it relates to its application to one samples

Student Satisfaction sent from average to the 60th percentile (z score = .2533). Dr. Reed wants to know the projected impact on test scores.  All she knows is that Student Satisfaction and Student Test scores are correlated at .43 and the current average test score is 81% with a standard deviation of 5%.  Show your work

a sample of n=16 scores is selected from a population with a mean of 60 and a standard deviation of 24. If the sample mean is M=66, what is the z-score for this sample mean?

Statistics Question