Question

A history teacher believes that students in an afternoon class have a higher mean score than...

A history teacher believes that students in an afternoon class have a higher mean score than the students in a morning class. The teacher randomly selected 41 students from her afternoon class and found that the mean score was a 99 with standard deviation of 6.3. The teacher randomly selected 36 students from her morning class and found that the mean score was a 96 with a standard deviation of 5.8. Can the teacher conclude that the afternoon students have a higher mean score? Find the P-Value

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Dear students , please like it.

Thanks.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A statistics teacher believes that students in an evening statistics class score higher than the students...
A statistics teacher believes that students in an evening statistics class score higher than the students in a day class. The results of a special exam are shown below. Test the teachers claim using a level of confidence of 0.05.   Day Students                   EveningStudents      n1 = 36                           n2 = 41                                                  x1 = 96                         x2 = 99 s1 = 5.8                         s2 = 6.3 a) Give the Ho and Ha and label which is the claim b) give the pvalue c) give the final decision...
A high school math teacher claims that students in her class will score higher on the...
A high school math teacher claims that students in her class will score higher on the math portion of the ACT then students in a colleague’s math class. The mean ACT math score for 49 students in her class is 22.1 and the standard deviation is 4.8. The mean ACT math score for 44 of the colleague’s students is 19.8 and the standard deviation is 5.4. At α = 0.05, can the teacher’s claim be supported? a. Write down the...
A teacher wants to compare the performance of her morning class versus her afternoon class. The...
A teacher wants to compare the performance of her morning class versus her afternoon class. The morning class has 6 students and the afternoon class has 6. To keep things fair, both classes were given the exact same test. She is interested in knowing whether the average in the morning class is less than the average in the afternoon class. The test results for each class are given below: Morning Class Afternoon Class 32.8 55.5 65.8 61.4 43.7 67.0 63.3...
Suppose a statistics instructor believes that there is no difference between the mean test scores of...
Suppose a statistics instructor believes that there is no difference between the mean test scores of students taking a morning class and students taking an afternoon class. She takes a sample from each of her classes, one morning and one afternoon. The mean and standard deviation for 40 morning students (sample 1) were 78 and 17.8, respectively. The mean and standard deviation for 45 afternoon students (sample 2) were 82.2 and 19.9. Using ?=0.05, determine if there is a difference...
Students in a chemistry class convince their teacher to use the following "group grading" scenario. Students...
Students in a chemistry class convince their teacher to use the following "group grading" scenario. Students will all take the exam on their own; however, the grade they receive will be the mean of their test score with 4 other randomly selected classmates. Assume that the test scores for this particular exam are normally distributed with a mean of 74 and a standard deviation of 12 points. You need an 80 or better on this exam. What is the probability...
A statistics teacher believes that the final exam grades for her class have a normal distribution...
A statistics teacher believes that the final exam grades for her class have a normal distribution with a mean of 80 and a standard deviation of 8. Answer the following: (a) Determine the z-score for a person from this population that has a test score of 66. Then find the z-score for someone whose test score is 95. (b) If x represents a possible test score from this population, find P(x > 87). (c) Find P(79 < x < 89)...
Students believe that Professor A has a lower class mean exam score than Professor B. To...
Students believe that Professor A has a lower class mean exam score than Professor B. To test this claim, 40 randomly chosen exams were selected from professor A and 26 exams were randomly selected from Professor B. Professor A had a sample mean of 80 with a sample standard deviation of 10. Professor B had a sample mean of 86 with a standard deviation of 14. Assume the exam scores are normally distributed for both professors. Use the PHANTOMS steps...
Raul received a score of 76 on a history test for which the class mean was...
Raul received a score of 76 on a history test for which the class mean was 70 with a standard deviation of 9. He received a score of 78 on a biology test for which the class mean was 70 with standard deviation 7. On which test did he do better relative to the rest of the class? biology test history test or the same
Raul received a score of 76 on a history test for which the class mean was...
Raul received a score of 76 on a history test for which the class mean was 70 with a standard deviation of 5. He received a score of 71 on a biology test for which the class mean was 70 with standard deviation 8. On which test did he do better relative to the rest of the class? biology test history test the same
Raul received a score of 72 on a history test for which the class mean was...
Raul received a score of 72 on a history test for which the class mean was 70 with a standard deviation of 7. He received a score of 80 on a biology test for which the class mean was 70 with standard deviation 5. On which test did he do better relative to the rest of the class? a) biology test b) history test C) the same
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT