Construct a 90% confidence interval for 𝜇 if a random sample of size n = 30 results in a sample mean = 45 and s = 2.2. The value of 𝜎 is unknown.
Question
Solution 1
To construct a 90% confidence interval for the population mean (μ), we will use the formula for a confidence interval when the population standard deviation (σ) is unknown:
CI = x̄ ± t * (s/√n)
where:
- x̄ is the sample mean
- t is the t-score from the t-distribution table
- s is the sample standa Knowee AI StudyGPT is a powerful AI-powered study tool designed to help you to solve study prob
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