Statistical phrase means
Explain what each part of the following statistical phrase means , as it would be reported in APA format t(4)= 2.87, p=0.032
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Professor Economises has 184 students in her introductory economics class. Suppose that the scores on the final exam in this class are normally distributed with a mean of 74 points and a standard deviation of 9 points.
A normal distribution has a mean of 45, and an unknown standard deviation. Which random variable value below could possibly have a z-score of 2.4?
In fact, it is positively skewed. What is the probability of selecting a sample of 45 one-bedroom apartments and finding the mean to be at least $2,365 per month? (Round z value to 2 decimal places and final answer to 4 decimal places.)
Suppose that the reaction time (sec) to a certain stimulus is a continuous random variable with a density function given by f(x)= k/x for 1<=x<=10 and 0 otherwise.
Based on a study of salaries of man and women who drive expensive cars, a researcher concludes that owning an expensive car can cause people to become wealthier. do you agree with this conclusion
For the following find the appropriate 95% confidence interval for the corresponding population proportion:
A politician is concerned with winning an upcoming election. What null hypothesis is he testing if he commits a type I error when he erroneously says that he will win the election?
A man claims to have extrasensory perception. As a test, a fair coin is flipped 26 times, and the man is asked to predict the outcome in advance. He gets 20 out of 26 correct. What is the probability that he would have done at least this well if h
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