Q50Section I (Objective (Q1–Q80))50 of 80

Sample mean from a confidence interval

For testing $H_0:\mu=\mu_0$ against $H_1:\mu\ne\mu_0$ , the $90\%$ confidence interval for $\mu$ of normal distribution, when $\sigma^2$ is unknown, is $(360,400)$ . Then the value of sample mean is given by:

Pick an option to check your answer. In a mock test a wrong answer here costs 0.83 mark.

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