# Question

The scientists referred to in Exercise 1 also considered the effect of gypsum on the electrical conductivity of soil. Two types of soil were treated with three different amounts of gypsum. The results are as follows.

a. Can you reject the hypothesis of no interactions? Explain.

b. Can the main effect of the amount of gypsum be interpreted? If so, interpret the main effect. Use the a = 0.05 level of significance. c. Can the main effect of soil type be interpreted? If so. interpret the main effect. Use the a = 0.05 level of significance.

a. Can you reject the hypothesis of no interactions? Explain.

b. Can the main effect of the amount of gypsum be interpreted? If so, interpret the main effect. Use the a = 0.05 level of significance. c. Can the main effect of soil type be interpreted? If so. interpret the main effect. Use the a = 0.05 level of significance.

## Answer to relevant Questions

Explain why it is better, when possible, to draw a simple random sample rather than a sample of convenience. Earth scientists measured several chemical properties in water samples taken from wells at three locations. Following are sample means, standard deviations, and sample sizes for pH measurements. a. What are the sample sizes ...Why does a large value of the F statistic provide evidence against the null_hypothesis that all the population means are equal? Why doesn't a small value of F statistic provide evidence against Ho? Compare the ANOVA table in Exercise 3 with the ANOVA table in Exercise 1. Would you recommend leaving the balance powered up continuously? Explain your reasoning. Following are weights, in pounds, for sample of 16 newborn boys and 14 newborn girls Can you conclude that the median weight differs between boys and girls? Use the a = 0.01 level of significance.Post your question

0