A Random Sample of 9 TI-89 Titanium Calculators Being Sold $\begin{array}{lllll}\hline 142 & 149 & 147 & 146 & 145 \\\hline 148 & 154 & 136 & 131 & \\\hline\end{array}$

question 99

Multiple Choice

A random sample of 9 TI-89 Titanium calculators being sold over the internet had the foll prices, in dollars.
$\begin{array}{lllll}\hline 142 & 149 & 147 & 146 & 145 \\\hline 148 & 154 & 136 & 131 & \\\hline\end{array}$
Assume the population standard deviation is $\sigma = 30$ and that the population is approximat normal. Construct a $95 \%$ confidence interval for the mean price for all the TI-89's being sold over the internet. owing

• A) (139.7, 148.8)
• B) (136.9, 151.6)
• C) (124.6, 163.8)
• D) (85.4, 203.0

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Definitions:

Skills Standardization

The process of ensuring that skills and competencies meet a consistent standard across individuals or organizations.

Inputs Standardization

The process of ensuring that inputs or resources used in a system or process meet specific, consistent standards.

Direct Supervision

A management approach where supervisors have immediate oversight and control over the work and conduct of their subordinates.

Standardization of Work Processes

The practice of establishing common procedures and criteria to ensure consistency and efficiency in operations.