The mean score on a standardized math skills test is known to be 50 for the entire U.S. population of fourth graders (with higher scores indicating better performance on the exam). A new math skills training program was being used at a local school district, and an administrator was charged with the task of evaluating whether the children under the new program have. performance that is different from the national average. Twenty-five fourth graders who were instructed using the math skills program were administered the standardized math exam (named variable as mathscore) State the null and alternative hypothesis
The
State the null and alternative hypothesis
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A researcher wanted to know whether the level of frustration over high gas prices differed for different types of vehicle owners. Following a sharp increase in the price of gas, the researcher asked 30 people to indicate their level of frustration with prices at the pump (frustration scores
ranged from 1 to 10, with higher scores indicating greater frustration). Ten people were surveyed who owned a motorcycle as their primarymeans of transportation (coded a 1 in the data file 1), 10 were surveyed who owned a hybrid vehicle (coded a 2 in the data file 1), and 10 were surveyed who owned a non-hybrid vehicle (coded a 3 in the data file Exam 3).
a.State the null and alternative hypotheses.
b. State a research question for the data.
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The
mean score on a standardized math skills test is known to be 50 for the entire U.S. population of fourth graders (with higher scores indicating better performance). A new math skills training program was being used at a local school district, and an administrator was charged with the task of evaluating whether the children under the new program have performance that is different from the national average (preferably the performance is higher than the national average, but test for either possibility). Twenty-five fourth graders who were instructed using the math skills program were administered the standardized math exam. The exam scores for the students are provided in the file Exam 1.sav
b. State a research question for the data.
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