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The following is a set of hypotheses, some information from one or more samples, and a standard error from a randomization distribution.
Test $H_{0}: \mu=10$ vs $H_{a}: \mu \neq 10$ when the sample has $n=71, \bar{x}=11.3$, and $s=0.90$ with $S E=0.11$.
Find the value of the standardized $z$-test statistic.
Round your answer to two decimal places.
\[
z=\mathbf{i} 0
\]
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Final Answer: The value of the standardized z-test statistic is \(\boxed{11.82}\).

Steps

Step 1 :The question is asking for the value of the standardized z-test statistic. The z-test statistic is calculated by subtracting the population mean (μ) from the sample mean (x̄) and dividing by the standard error (SE). The formula for the z-test statistic is: \[ z = \frac{x̄ - μ}{SE} \]

Step 2 :Given that μ = 10, x̄ = 11.3, and SE = 0.11, we can substitute these values into the formula to find the z-test statistic.

Step 3 :The calculated z-test statistic is 11.82 when rounded to two decimal places. This value represents how many standard errors the sample mean is away from the population mean.

Step 4 :Final Answer: The value of the standardized z-test statistic is \(\boxed{11.82}\).

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