$\"\"$

The set of data has $\"\"$ , $\"\"$ and $\"\"$ .

The study was conducted to test a claim of $\"\"$ .

Find $\"\"$ value.

$\"\"$

$\"\"$ .

The sample standard deviation is $\"\"$ .

$\"\"$ .

$\"\"$

$\"\"$ .

Therefore, $\"\"$ .

$\"\"$

$\"\"$ .