Find the Value of the Standard Score, Z, and Determine $\mathrm { H } _ { \mathrm { a } } : \mu \neq 18.7 , \mathrm { n } = 11 , \overline { \mathrm { x } } = 20.5 , \sigma = 7$

question 11

Multiple Choice

Find the value of the standard score, z, and determine whether the alternative hypothesis is supported or not supported at a 0.05 significance level.
- $\mathrm { H } _ { \mathrm { a } } : \mu \neq 18.7 , \mathrm { n } = 11 , \overline { \mathrm { x } } = 20.5 , \sigma = 7$

• A) \(z = - 0.85\); supported
• B) \(z = - 0.85\); not supported
• C) \(\mathrm { z } = 0.85\); supported
• D) \(z = 0.85\); not supported

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