Student enrollment at a local school is concerning the community because the number of student has dropped to 504 which is a 20% decease form the previous year. what was the student enrollment the previous year?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Ineed with number 6 , explain how to get 1978

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).