Which of the following best describes a P value? Group of answer choices a. A measure of the process of drawing conclusions about an entire population based on information in a sample. b. A measure of external validity c. The probability that an effect as large, or larger, than that observed in a particular study could have occurred by chance alone given that there is truly no relationship between the exposure and diseases.

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

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1

Solve the following system of equations express your answer as an ordered pair in the format (a,b) with no spaces between the numbers of symbols 5x+2y=22