An analysis of reading test scores of students at a rural Texas school district was carried out in Current Issues in Education (Jan. 2014). Students were classified as attending elementary, middle, or high school and whether they passed a reading comprehension test. Toe data for the sample of 1,012 students are summarized in the accompanying table. Does the passing rate on the reading comprehension test in Texas differ for elementary, middle, and high school students? Use
An analysis of variance of the yields of five different varieties of wheat, observed on one plot each at each of six different locations. The data from this randomized block design are listed here:
a. Use the appropriate nonparametric test to determine whether the data provide sufficient evidence to indicate a difference in the yields for the five different varieties of wheat. Test using
b. How do the analysis of variance F test compare with the test in part a? Explain.
Assuming the null hypothesis is true, what is the probability that our z-test statistic would fall outside the z-critical boundaries (in the tails of the distribution the region of rejection) for anв
Calculate the area between and And how much then will be under the standard normal curve?
Find the probability density function of