Question

'Q1: A business school placement director wants estimate the mean annual salaries 5 years after students graduate random sample of 25 such graduates found sample mean of $42,740 and a sample standard deviation of $4,780. Find 90% confidence interval for the population mean, assuming that the population distribution is normal:'

Name: q1 a business school placement director wants estimate the mean annual salaries 5 years after students graduate random sample of 25 such graduates found sample mean of 42740 and a sample sta 79723
Uploaded: 2022-06-04T06:01:41-08:00
Duration: 2 min 6 s
Channel: Robin Corrigan
Description: q1 a business school placement director wants estimate the mean annual salaries 5 years after students graduate random sample of 25 such graduates found sample mean of 42740 and a sample sta 79723

          'Q1: A business school placement director wants estimate the mean annual salaries 5 years after students graduate random sample of 25 such graduates found sample mean of $42,740 and a sample standard deviation of $4,780. Find 90% confidence interval for the population mean, assuming that the population distribution is normal:'

Added by Jay R.

Probability with Applications in Engineering, Science, and Technology

Matthew A. Carlton • Jay L. Devore 2nd Edition

Instant Answer

Solved by Expert Robin Corrigan

06/04/2022

Step 1

1. This means the confidence coefficient is the t-score for a 90% confidence level with 24 degrees of freedom, which is approximately 1.71. ** Show more…

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'Q1: A business school placement director wants estimate the mean annual salaries 5 years after students graduate random sample of 25 such graduates found sample mean of $42,740 and a sample standard deviation of $4,780. Find 90% confidence interval for the population mean, assuming that the population distribution is normal:'