The weights of the Imaginary Texas Winter Melon are normally distributed with a mean of 20 pounds and a standard deviation of 4 pounds. Do the following exercises using anything from your notes and the table provided following all the questions 1. a C a) Convert a weight of 26 pounds to a z-score. b) Convert a weight of 17 pounds to a z-score. c) Find the weight that corresponds to a z-score of 2. d) Find the weight that corresponds to a z-score of -1.5.

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A statistics professor finds that he can predict a student's grade on the final exam based on the number of classes the student attended over the course of the semester. What is the casual relationship between these two variables? a. Students who do well on exams are going to come to class because they enjoy the material. b. We cannot say anything definitive about the casual relationships, as all three of these explanations are possible. c. The relationship likely is the result of some third variable which accounts for both a student's attendance in class and his or her performance on the exam. d. Attendence in classes causes students to understand the material and do well on the exams.

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Nathan takes the State Aptitude Assessment, which has a mean of 350 and a standard deviation of 50. His brother Kyle takes the Regional Readiness Test, which has a mean of 300 and a standard deviation of 45. If Kyle's score was 375, what is the cooresponding z score? a. +2.22 b. +1.00 c. +1.67 d. -1.67

Below are the summary statistics calculated from the heights of students on a university campus. 25% percent of the students were ________ inches or taller. Median: 68 inches Minimum: 50 inches Q1: 58 inches Q3: 71 inches A. 71 B. 68 C. 58 D. Cannot be determined

With the extra data value,  the range, standard deviation, and variance is?

Which of these statistics BEST describes the relationship in this scatterplot?   Group of answer choices r = –.45 r = .50 r = –1.00 r = .10

Each of the 5 cats in a pet store was weighed. Here are their weights (in pounds). 13, 12, 5, 12, 9 Find the median and mean weights of these cats. If necessary, round your answers to the nearest tenth. (a) Median: pounds X Ś ? (b) Mean: pounds