statistics
posted by Liz .
SAT Exam Scores – A school administrator wonders if students whose first language is not English score differently on the math portion of the SAT exam than students whose first language is English. The mean SAT math score of students whose first language is English is 516, on the basis of data obtained from the College Board. A simple random sample of 20 students whose first language is not English results in a sample mean SAT math score of 522. SAT math scores are normally distributed, with a population standard deviation of 114.
(a) Why is it necessary for SAT math scores to be normally distributed to test the hypotheses using the methods of this section?
(b) Determine the appropriate null and alternative hypotheses to assess whether students whose first language is not English score differently on the math portion of the SAT exam.
(c) Use the classical or Pvalue approach at the á = 0.1 level of significance to test the hypothesis in part (b).
(d) Write a conclusion based on your results to part (c)

statistics 
PsyDAG
a. What methods were in the section? Probabilities can be calculated for a normal distribution.
b. Ho: mean 1 = mean 2
Ha: mean 1 ≠ mean 2
c. Z = (mean1  mean2)/standard error (SE) of difference between means
SEdiff = √(SEmean1^2 + SEmean2^2)
SEm = SD/√(n1)
If only one SD is provided, you can use just that to determine SEdiff.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.
d. Is that proportion from c ≤ .01 (.005 at each end)? 
statistics 
Anonymous
ifx=76.9s=8.5compute the test statistic
Respond to this Question
Similar Questions

statistics
every year thousands of students take the SAT'S. Recent trends show that the scores on the verbal section follow an approx. normal distribution with mean of 350 and stand. deviation of 110 A)a student is chosen at random. it is noted … 
statistics
Every year thousands of students take the SAT'S. RECENT TRENDS SHOW THAT THE SCORES ON THE VERBAL SECTION FOLLOW AN APPROX. NORMAL DISTRIBUTION WITH MEAN 550 AND STANDARD DEVIATION OF 110 68.26% OF THE STUDENTS WHO TAKE THE SAT VERBAL … 
statistics
SAT scores are normally distributed. The SAT in English has a mean score of 500 and a standard deviation of 100. a. Find the probability that a randomly selected student's score on the English part of the SAT is between 400 and 675. … 
statistics
The average math SAT score is 500 with a standard deviation of 100. A particular high school claims that its students have unusually high math SAT scores. A random sample of 50 students from this school was selected, and the mean math … 
statistics in psychology
An analysis of the combined SAT scores (Verbal + Math) of a sample of psychology majors at one school indicated that the mean was 939 and the standard deviation was 166. Show your calculations used the answer the following two questions. … 
CRJ303Statistics question
Reworded from the "Study Questions" part of Chapter 5 from this site: "Student Study Site for Essentials of Social Statistics for a Diverse Society" Please show the steps for each question "When the Scholastic Aptitude Test (SAT) … 
statistics
do students who learned English as well as another language simultaneously score worse on the SAT critical reading exam than the general population of test takers? 
statistics
students who learned English as well as another language simultaneously score worse on the SAT critical Reading exam than the general population of test takers? 
SAT
Please help me. I am a foreign boy. English is not my first language. I find the SAT questions too tough. In my home land we did not learn much english in high school. How can I pass the SAT with a good score? 
hostos
the average math sat score is 500 with a standard deviation of 100. a particular high school claims that its students have usually high math SAT scores a random sampel of 50 students from this school was selected, and the mean math …