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Many high school students take either the SAT or the ACT. However, some students take both. Data were collected from 60 students who took both college entrance exams. The mean SAT score was with a standard deviation of. The mean ACT score was with a standard deviation of. The linear correlation coefficient between the two scores equals r = 0.817.
Predict the SAT score (y) for a student who receives an ACT score x=24.
Suppose you are in a class of 120 students. What is the probability that at most 42 students will say that they frequently experience stress in their daily lives?
Sample mean varies from population mean of 10 pounds at 5 percent level of significance using two-tailed test. Compute test statistic for the sample data.
multiple regression predicts a single dependent variable y from two or more independent x variables.mlr is a
When there is more than two predictors, one can no longer graph the tted surface in the usual way. How then does one make sense of a surface in more than three dimensions?
the seats were subjected to a safety stress test in which scores were assigned on a continuous scale of 0 to 10.
Suppose the experiment is now a randomized block experiment with three blocks. There are five whole plot experimental units for factor A in each of the three blocks. a. Explain a method of randomizing the experimental units to the levels of factors..
1. a random sample is collected of size n from a population with standard deviation and with the data collected a 95
Disney tells you that the average distance between the ears on a Mickey Mouse hat is 5 inches. In a sample of 100 Mickey Mouse hats you find that the average distance between the ears on the hats is 5.2 inches with a standard deviation of 1 inch.
Gambling Visit www.flalottery.com and answer the following questions about the Florida Lottery. Clearly explain how each of the following probabilities is computed. What is the probability of winning the jackpot if you play the Florida Lotto
Based on past data, the Student Recreation Center knew that the proportion of students who prefer exercising outside over exercising in a gym was 0.734. To update their records, the SRC conducted a survey. Out of 95 students surveyed, 76 indicated..
a multiple choice test consists of 60 questions. each question has four possible answers and each question has one
The mean weight of newborn babies in a Long Island Community is 7.5 lbs with a standard deviation of 1.4 lbs. What is the probability that a random sample of 49 babies has a sample mean weight of at least 7.2lbs?
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