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Hi, can you help me answer this question please, thank you

Hi, can you help me answer this question please, thank you-example-1

1 Answer

3 votes

Answer:

-1.010

Step-by-step explanation:

The formula for calculating the test statistics is expressed as:


t=\frac{\frac{\overline{x}-\mu}{\sigma}}{\sqrt[]{n}}

Given the following parameters

Mean x = 6.2

Standard deviation σ = 3.43

μ = 6.7

n = 48

Substitute the given parameters into the formula:


\begin{gathered} t=(\frac{(6.2-6.7)/(3.43)}{\sqrt[]{48}}) \\ t=(-0.5)/(0.495077) \\ t=-1.0099 \\ t=-1.010 \end{gathered}

This shows that the test statistics rounded to 3 decimal places is -1.010

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