Someone PLEASE HELP ME I don’t get it

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

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).

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10