Sir; with all due respect, ....the Organic Chemistry Tutor is in the Delta Force of of RU-vid, and they never reveal their identity out in the field, ( in Country) where their safety could be jeopardized .
Thank you for these videos! I am taking a class on statistics and have found these tutorials and your presentation style very helpful to better understand the subject. You are doing an excellent job!
Freeking grade 11 student here from Philippines messing with last quarter performance task... my teacher explained this with 1h duration time with our own language but i can't understand it. But with the use of this, within just less than 7m, a SHIT of paper just solved.
Im just confused because i watched another youtube video with this topic. He stated that all null hypothesis uses only equal sign and the alternative hypothesis uses other signs not including the equal sign. But i know your video is a more reliable source of information. Im just confused and i need confirmation.
So, my question is about how you write the null and alternative hypothesis. My teacher says that you cannot use less or equal ≤ or more or equal ≥ when you write the null hypothesis for example H0: p ≤ 0.01 Ha: p > 0.01 My teacher says this is invalid and it should be H0: p = 0.01 Ha: p > 0.01 But in introductory statistics 4th edition mentioned that you can use both, page 457 "(Note that some practitioners write H0 as a simple statement of equality, even with > or < as the symbol in the alternative hypothesis. This practice is also acceptable.)" Am I misunderstanding something?
How to make null n alternative hypothesis in this case WORK PROBLEM Can we conclude that patients with primary hypertension (PH), on the average, have higher total cholesterol levels than normotensive (NI) patients? This was one of the inquiries of interest for Rossi et al. (A-12). In the following table are total cholesterol measurements (mg/dl) for 133 PH patients and 41 NT patients. Can we conclude that PH patients have, on average, higher total cholesterol levels than NT patients? Let u 05.
Hi! My name is Janna I just wanna ask about this: (can you answer this to me just state the Null and alternative) The management of a large hospital states that the mean age of its patients is 44 years. Records of a random sample of 100 patients give a mean age of 48.4 years. Using a population standard deviation of 18 years, test at the 5% significant level whether there is evidence that the managements statement is incorrect.
I'm confused. In my class the teacher taught us: Mew = The current mean, what's currently the case (so e.g. 450g) Mew0 (Null Hypothesis) = Someone comes along, says that 450g is not correct and suggests something else, e.g. 400g But what's the alternative hypothesis here? Is it just that when the probability that it could be 400g is too low (hence, H0 is rejected), something else is suggested (a third option)?
