5. The LMC math department conducted a survey to investigate whether at least 25% of students that regularly go to the Mathlab require assistance with Statcrunch software. The researcher randomly selected 97 students to participate in the study and 26 students from the sample admitted regularly seeking help from the Mathlab. a. Verify that conditions are met for the use of the normal model. (4 points) b. Calculate the standard error. (4 points) c. Estimate the true proportion of students who needed assistance with Statcrunch and go to the Mathlab using a 95% level confidence. Show all your work and write your conclusion in complete sentences. (4 points)
Added by Jasmine M.
Close
Step 1
There are two conditions that need to be met: the sample size is large enough and the success-failure condition is met. Show moreā¦
Show all steps
Your feedback will help us improve your experience
Sri K and 81 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Q4: (10 pt) To collect data in an introductory statistics course, I gave the students a questionnaire. One question asked whether the student was a vegetarian. Out of 25 students, 5 answered yes. Use these data to illustrate inference for a proportion. Let Ļ denote the population proportion who would say yes. Consider H0: Ļ = 0.5 vs. Ha: Ļ ā 0.5 a) (6 pt) Conduct the score test, which uses zc = (ĻĢ - Ļ0) / sqrt(Ļ0(1 - Ļ0)/n). Report and interpret the result. b) (4 pt) Find the 95% Wald confidence interval for Ļ.
Madhur L.
In a random sample of 100 LMC students, 32 report reading the LMC Experience regularly. Use a 95% confidence interval to estimate the percentage of all LMC students who read the LMC Experience regularly. Round the standard error to 2 decimal places.
Sri K.
For the Y5, assume that the population mean (average) is 1.1, alpha = 0.05, t at alpha =0.025 and n=5 is 2.571.; and epsilon (error) = 0.01. Use these information to answer the following questions: 1) (2 marks) Conduct the Null hypothesis test. Write your conclusion regarding the model. 2) (3 marks) Conduct the t-test . Write your conclusion regarding the model. 3) (5 marks) Find the 95% Confidence Interval and state the advice on what to do to the model.
Rashmi S.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD