mean trough level of the population to be 3 micrograms/ml. and the researcher conducts a study among 93 newly diagnosed arthritis patients and finds the mean trough to be 6.1 microgran with a standard deviation of 2.4 micrograms/ml, calculate the z  value for the test statistic.

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a researcher suspects the mean trough ( the lowest dosage of medication required to see clincial impprovement of symptoms) level for a medication to treat arthritis is higher than was previously reported in other sutdies. if previous studies found the mean trough level of the population to be 3 micrograms/ml. and the researcher conducts a study among 93 newly diagnosed arthritis patients and finds the mean trough to be 6.1 microgran with a standard deviation of 2.4 micrograms/ml, calculate the z  value for the test statistic.

Expert Solution
Step 1

From the given scenario, following information can be extracted as:

 

Sample mean  = 6.1

Sample size = 93

Sample standard deviation = 2.4

Hypothesized mean = 3

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