Describe what both a and b below are asking for as though you are saying them out loud to me. Then, provide the R code to solve the problems based on the notation provided. a. P (X ≤ 70) X ~ N (75, 5) (1 pts)
b. Find the value of X such that P(≤ 70) = 25% where X ~ N (75, 5). (1 pt

Which number produces a rationale number when multiplied by 1/5

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables