A math teacher claims that taking both geometry and algebra II leads to less Variation in...
A math teacher claims that taking both geometry and algebra II leads to less Variation in ACT scores. The mean ACT score is 21.2, and standard deviation of the population is 4.9. The math Teacher takes a random sample of 25 students who have taken both courses, and calculates a mean ACT score of 21.9 and standard deviation of 3.8. (a) Test this claim at the \alpha α =.05 level. (b) In addition to your conclusion, identify a lurking variable that could have influenced this study. (c) What assumptions needed to be met in order for the teacher to run this hypothesis test?
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A math teacher claims that taking both geometry and algebra II
leads to less Variation in...
A math teacher claims that she has developed a review course that increases the scores of...
A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with mu equalsμ=519519. The teacher obtains a random sample of 20002000 students, puts them through the review class, and finds that the mean math score of the 20002000 students is 525525 with a standard deviation of 114114. Complete parts (a) through...
A math teacher claims that she has developed a review course that increases the scores of...
A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with mu equals510. The teacher obtains a random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is 515 with a standard deviation of 111. Complete parts (a) through...
Amath teacher claims that she has developed a review course that increases the scores of students on the math porti...
Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam Based on data from the administrator of the exam, scores are normally distributed with u 512. The teacher obtains a random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is 519 with a standard deviation of 117. Complete parts (a) through (d)...
y of IU 1 cup Score: 0.22 of 1 pt Question Help 10.3.31-T Amath teacher claims...
y of IU 1 cup Score: 0.22 of 1 pt Question Help 10.3.31-T Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with 512. The teacher obtains a random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is...
I want to ensure I am understanding this question fully Amath teacher claims that she has...
I want to ensure I am understanding this question
fully
Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with p=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 518 with a...
10.3Thank you:) Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed...
10.3Thank you:)
Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at the a = 0.01 level of significance with 15 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the a = 0.01 level of significance based on a sample size of n = 10. (c) Determine the critical value(s) for a two-tailed test of a population mean at the a...
this is a single sample t test problem this is math Assignment #11 Single Sample t-Test...
this is a single sample t test problem
this is math
Assignment #11 Single Sample t-Test What factor determines whether you should use a z-test or a t-test statistic for a hypothesis test? 11.1 A sample is selected from a population mean of u 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M 11.2 = 31.3 with a sample variance of s2 9 If the sample consists of...
Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam Based on data from the administrator of the exam, scores are normally distributed with u 512. The teacher obtains a random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is 519 with a standard deviation of 117. Complete parts (a) through (d)...
y of IU 1 cup Score: 0.22 of 1 pt Question Help 10.3.31-T Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with 512. The teacher obtains a random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is...
I want to ensure I am understanding this question
fully
Amath teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with p=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 518 with a...
10.3Thank you:)
Complete parts (a) through (c) below. (a) Determine the critical value(s) for a right-tailed test of a population mean at the a = 0.01 level of significance with 15 degrees of freedom. (b) Determine the critical value(s) for a left-tailed test of a population mean at the a = 0.01 level of significance based on a sample size of n = 10. (c) Determine the critical value(s) for a two-tailed test of a population mean at the a...
this is a single sample t test problem
this is math
Assignment #11 Single Sample t-Test What factor determines whether you should use a z-test or a t-test statistic for a hypothesis test? 11.1 A sample is selected from a population mean of u 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M 11.2 = 31.3 with a sample variance of s2 9 If the sample consists of...
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