Question

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

Answer 1

-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