![subject](/tpl/images/cats/mat.png)
Mathematics, 10.05.2021 17:20 querty2400
On the SAT exam, a total of 25 minutes is allotted for students to answer 20 math questions without the use of a calculator. A guidance counselor would like to know if the students in his school are prepared to complete this portion of the exam in the time allotted. To investigate, the counselor selects a random sample of 35 students and administers this portion of the test. The students are instructed to turn in their test as soon as they have completed the questions. The mean amount of time taken by the students is 23.5 minutes with a standard deviation of 4.8 minutes. The counselor would like to know if the data provide convincing evidence that the true mean amount of time needed for all students of this school to complete this portion of the test is less than 25 minutes. What are the appropriate hypotheses?
H0: μ = 23.5 versus Ha: μ < 23.5, where μ = the true mean amount of time needed for students of this school to complete this portion of the exam
H0: μ = 23.5 versus Ha: μ > 23.5, where μ = the true mean amount of time needed for students of this school to complete this portion of the exam
H0: μ = 25 versus Ha: μ < 25, where μ = the true mean amount of time needed for students of this school to complete this portion of the exam
H0: μ = 25 versus Ha: μ > 25, where μ = the true mean amount of time needed for students of this school to complete this portion of the exam
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 20.06.2019 18:02
Josue tosses a coin and spins the spinner at the right. what are all the possible outcomes
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
What is the average diastolic blood pressure for adults
Answers: 2
You know the right answer?
On the SAT exam, a total of 25 minutes is allotted for students to answer 20 math questions without...
Questions
![question](/tpl/images/cats/es.png)
Spanish, 18.01.2021 17:20
![question](/tpl/images/cats/health.png)
Health, 18.01.2021 17:20
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/en.png)
English, 18.01.2021 17:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.01.2021 17:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.01.2021 17:20
![question](/tpl/images/cats/biologiya.png)
Biology, 18.01.2021 17:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 18.01.2021 17:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 18.01.2021 17:20
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/en.png)
English, 18.01.2021 17:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 18.01.2021 17:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)