Question

The heights of Vulcans - an imaginary humanoid in Star Trek- are normally distributed. Suppose that a simple random sample of 13 Vulcans have a standard deviation of 29.5. Find the confidence Interval for the standard deviation of the entire population with 80% confidence. 1. Find the critical values $\chi_L^2 = \chi_{1-\alpha/2}^2$ and $\chi_R^2 = \chi_{\alpha/2}^2$ that correspond to 80% degree of confidence and the sample size $n = 13$. $\chi_L^2 = \Box$ $\chi_R^2 = \Box$ 2. Find the upper and lower limits of 80% confidence Interval for the standard deviation of the entire population. The lower limit of the 80% confidence interval = $\Box$ The upper limit of the 80% confidence interval = $\Box$

          The heights of Vulcans - an imaginary humanoid in Star Trek- are normally distributed. Suppose that a simple random sample of 13 Vulcans have a standard deviation of 29.5. Find the confidence Interval for the standard deviation of the entire population with 80% confidence.
1. Find the critical values $\chi_L^2 = \chi_{1-\alpha/2}^2$ and $\chi_R^2 = \chi_{\alpha/2}^2$ that correspond to 80% degree of confidence and the sample size $n = 13$.
$\chi_L^2 = \Box$  $\chi_R^2 = \Box$
2. Find the upper and lower limits of 80% confidence Interval for the standard deviation of the entire population.
The lower limit of the 80% confidence interval = $\Box$
The upper limit of the 80% confidence interval = $\Box$

the heights of vulcans an imaginary humanoid in star trek are normally distributed suppose that a simple random sample of 13 vulcans have a standard deviation of 295 find the confidence inte 28502

Added by Robert K.

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