The random variable X = weight of a randomly selected bag of chips can be modeled by a normal distribution with m = 14.3 ounces and s = 0.08 ounces. Which of the following is correct? I. The probability that a randomly selected bag of chips weighs between 14.14 ounces and 14.54 ounces is about 0.9735.
II. P(X 14.36) » 0.16

A. II only
B. I, II and III
C. I and II
D. II and III

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

Select the lengths in centimeters that would form a right triangle

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels