Educational testing compa

Educational testing compa

Educational testing companies provide tutoring in an effort to help students perform better on the SAT. The company claim their courses will improve scores by an average of 120 points. A researcher is uncertain of the claim and believes that 120 points many be an over estimation. In an evaluation of one of the services, the researcher collects scores from 3 students who took the class and 48 who did not.A. Use a= .05 and the following data. What is your conclusion?DataSample mean- course= 1058 no course= 983sample Standard devation- course= 90 no course= 105What will my sample size for n1 and n2 be. What will the sample mean for both be? What will the variance for both 1 and 2 be?What is the point estimate? Margin of error? and C.I?

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