Which of the following is not true? choose the correct answer below. a. if values are converted to standard z-scores, then procedures for working with all normal distributions are the same as those for the standard normal distribution. b. a z-score is an area under the normal curve. c. a z-score is a conversion that standardizes any value from a normal distribution to a standard normal distribution. d. the area in any normal distribution bounded by some score x is the same as the area bounded by the equivalent z-score in the standard normal distribution.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0