Let x be a random variable that represents the length of time it takes a student to write a term paper for Dr. Sugg's Stats class. After interviewing many students, it was found that x has an approx. normal distribution with mean =5.2 hours and standard deviation =3.8 hours.

A) Convert each of the following x intervals to standardized z intervals: (Just find Z)
a. x is less than or equal to 0.5
b. -2.0 is less than or equal to x is less than or equal to 2.9
c. x is greater than or equal to 2.5

B) Convert each of the following z intervals to raw score x in

Question

Let x be a random variable that represents the length of time it takes a student to write a term paper for Dr. Sugg's Stats class. After interviewing many students, it was found that x has an approx. normal distribution with mean =5.2 hours and standard deviation =3.8 hours.

A) Convert each of the following x intervals to standardized z intervals: (Just find Z)
          a. x is less than or equal to 0.5
          b. -2.0 is less than or equal to x is less than or equal to 2.9
          c. x is greater than or equal to 2.5

B) Convert each of the following z intervals to raw score x in

anonymous · Answer

@crystale2006 do you know the formula for standardising?