Please solve only 1b in 30 minute please Exercise 1bAfter measuring the cortisol level in 30 students (see problem 1a) it isaverage cortisol levels measured at 324 nmol /I with a standard deviation of48 nmol / I. We assume that the cortisol concentration follows a normal distribution. Rainout the margin of error in the measured average value for 95% confidence level.The standard normally distributed z-value is equal to 1.96 for a 95% confidence level. 1аYou will conduct a study at OsloMet where the stress level amongthe students at the Study Program for Biotechnology and Chemistry will be mapped.The stress level should be determined by measuring the morning concentrationthe stress hormone cortisol in saliva samples collected from a sample of students.Which sampling strategy do you want to choose to get as representative as possiblereply? The answer must be substantiated.

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After measuring the cortisol level in 30 students (see problem 1a) it is average cortisol levels measured at 324 nmol /I with a standard deviation of 48 nmol / I. We assume that the cortisol concentration follows a normal distribution. Rain out the margin of error in the measured average value for 95% confidence level. The standard normally distributed z-value is equal to 1.96 for a 95% confidence level.

After measuring the cortisol level in 30 students (see problem 1a) it is average cortisol levels measured at 324 nmol /I with a standard deviation of 48 nmol / I. We assume that the cortisol concentration follows a normal distribution. Rain out the margin of error in the measured average value for 95% confidence level. The standard normally distributed z-value is equal to 1.96 for a 95% confidence level.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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