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Question: equestion help a math teacher claims that she has developed...

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EQuestion Help A math teacher claims that she has developed a review course that Increases the scores of students on the math portion of a colege entrance exam. Based on data from the administrator of the earn, scores are normally distributed with μ-512 The teacher obtains a random sample of 2200 students, puts them through the review class, and finds that the mean math score of the 2200 students is 519 with a standard deviation of 111. Complete parts (a) through (d) below EE Click the icon to view the tDistritution Area in the Right Tail. (a) State the null and alternative hypotheses. Let μ be the mean score. Choose the correct answer below. O A. Ho-p> 512, H, pr 512 O B. Ho : μ<512, Ht-p>512 (b) Test the hypothesis at the α-Ο 10 level of significance Is a mean math score of 519statisícały significanty higher than 512? Conduct a hypothesis test using the P-value approach Find the test statistic. Round to two decimal places as needed) Approximate the P-value corresponding to the critical value of t The P-value is Is the sample mean statistically significantly higher? O Yes O No (c) Do you think that a mean math score of 519 versus 512 will aflect the decision of a school admissions administrator? In other words, does the increase in the score have any practical significance? O Yes, because every increase in score is practically significant O No, because the score became only 1 37% greater (d) Test the hypothesis at the α-o10 and the sample standard deviation is still 111. Is a sample mean of 519 test using the P-value approach level of significance with n . 375 studerts Assume that the sample mean is sta 519 significantly more than 512? Conduct a hypothesis Find the test statistic Round to two decimal places as needed ) Approximate the P-value corresponding to the critical value oft The P-value is s the sample mean stadisticaly significantly higher? O Yes Click to select your answer(s) Save for Later 652 PM
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