The students calculate a chi-squared value of 92. 86 and compare it with a critical value of 7. 82. Which of the following best completes the chi-square goodness-of-fit test?.

Layer r contains a well-known index fossil that is 100 million years old. based on this information and the principle of superposition, a. layers t and m are older than 100 million years, and layers x and g are younger than 100 million years. b. layers t, m, x, and g are all older than 100 million years. c. layers t and m are younger than 100 million years, and layers x and g are older than 100 million years.