Mathematics, 15.05.2021 18:10, andrewbao999

PRETTY PLEASE HELP!! A mathematics software company claimed that their software could increase student performance in Algebra 2 by 30 points. In a random sample of 25 students who used the software, the average was 21 points, and had a standard deviation of 12 points. What is the z-value? Do we accept or reject the claim based on the z-value? Explain. *
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PRETTY PLEASE HELP!! A mathematics software company claimed that their software could increase stud...