delawdermia27
04.08.2021 •
Mathematics
The University of California Office of the President (UCOP) wants to estimate the mean annual salaries for graduate students employed as TAs across the University system. They collected a random sample of 25 salaries from graduate students employed as TAs, and found a sample mean of $19,267 and a sample standard deviation of $3,144. Find a 90% confidence interval for the population mean salary, assuming that the population distribution is normal.
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Ответ:
22.5
Step-by-step explanation:
12 + 15 = 27
What percent of 120 is 27? = 22.5