what is the relative frequency of yields in sample A that were greater than 21.5 and less than or equal to 22.5 q/ha?

What is the cumulative frequency of students that scored half of the points on the SAT? choices: 1. none of the above/can't be determined 2. 26 3. 9 4. 55.5 5. 0.35   I already tried 2(26) and 5(0.35) but it was wrong.

Epistasis is a phenomenon in which one gene controls the expression of another. In one case, a dihybrid cross should yield a 9:3:4 ratio. You collect the following data on mice: black coat: 138 brown coat: 46 white coat: 60 Is there any reason to doubt the ratio of 9 black : 3 brown : 4 white?

Which of the following is NOT a requirement of testing a claim about the mean of the differences from dependent samples? Choose the correct answer below. O A. The degrees of freedom aren- 2. O B. The samples are simple random samples. O C. The sample data are dependent. O D. Either the number of pairs of sample data is larger than 30 or the pairs have differences that are from a population having a distribution that is approximately normal, or both.