Assume for a given study that the null hypothesis asserts the expected value of a phenomenon is 10. a research study results in a 95% confidence interval reported as [7.142, 9.865]. what decision would you make based on this confidence interval?

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

I’m really confused and need to learn this