1. (11 points) A study examined language acquisition in learning-impaired children. The researcher designed two computer

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1 11 Points A Study Examined Language Acquisition In Learning Impaired Children The Researcher Designed Two Computer 1 (97.97 KiB) Viewed 25 times

1. (11 points) A study examined language acquisition in learning-impaired children. The researcher designed two computer modules that taught children the same content but used different instructional approaches. The study refers to the two computer modules as "Module 1" and "Module 2. Children were assigned at random to either Module 1 or Module 2. At the end of each module, students took a quiz asking the children to identify 25 words. The number of correct identifications by the children in each Module group were recorded. Data are summarized in the table below (for example, the 175 students who were assigned to Module 1 had a sample mean of 18.07 correct identifications with a sample standard deviation of 4.53). Number of correct identifications у 5 Module 1 175 18.07 4.53 Module 2 175 16.92 4.98 n Use the provided information to perform a two-sample t-test to determine whether there is a difference between the mean number of correct identifications for students using Module 1 and the mean number of correct identifications for students using Module 2. There is no information suggesting that either module should result in a higher (or lower) number of correct identifications. b. C. a. State the null and alternate hypotheses. Be sure to use correct notation and symbols. Is this this a two-sided test or a one-sided test? Explain why. You can assume that the conditions are met for this hypothesis test. Calculate the test statistic for this hypothesis test using the appropriate formula. YOU MUST SHOW ALL WORK IN YOUR DOCUMENT TO RECEIVE FULL CREDIT. Round your final answer to three decimal places. d. Determine the p-value for this hypothesis test using the STAT100 Z Table. Use correct notation and state the p-value as a decimal rounded to four decimal places. Draw a conclusion for this hypothesis test and give the reason for your conclusion. Use o level of significance of a =.05. e.