What is the value of t*, the critical value of the t distribution for a sample of size 22, such that the probability of being greater than t* or less than -t* is 1%? t* = 7.3
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What is the value of t*, the critical value of the t distribution for a
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- 1. The standard deviation of SAT scores is 100 points. A researcher decides to take a sample of 500 students’ scores to estimate the mean score of students in your state. What is the standard deviation of the sample mean? A) 0.2 B) 5 C) 4.47 D) 100 2. a binomial distribution with n = 10 and p = 0.2 . P(X = 5)= A) 0.34 B) 0.021 C) 0.026 D) 0.41The annual rainfall (in inches) in a certain region is normally distributed with mean = 40 and o=4. What is the probability that starting with this year, it will take more than 10 years before a year occurs having a rainfall of more than 50 inches? What assumption are you making?What is the probability of scoring above a z-score of -0.08?
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