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Question - More on searching for significance. You perform 1000 significance tests using α = 0.05. Assuming that all null hypotheses are true, about how many of the test results would you expect to be statistically significant? Explain how you obtained your answer.
De acuerdo con la Agencia Seguros de un Estado, una familia de 4 miembros gasta entre 400 y 3800 dólares anuales en toda clase de seguros. Sunponga que el dinero que se gasta tiene una distribución uniforme.
The table shows the percentages of income levels for each type of animal owned. Are these row percentages, column percentages, or table percentages?
Find an n×1 vector U of normal random variables with mean 0 and cov(U) = G. Hint: let V be an n×1 vector of independent N(0, 1) variables, and let U = G1/2V .
Categorize the events as dependent or independent. Events A and B where P (A) = 0.7, P (B) = 0.8, and P (A and B) = 0.56.
Find the critical value for different types of sample size and level of significance:
a national survey is conducted to assess the association between hypertension and stroke in persons over 75 years of
There is significant evidence at alpha=0.05 t o show that the populations of endotoxin levels in children living varying distances from operating farms are not equal.
The probability that the patient enters a law suit is 0.9. What is the probability that the doctor makes an incorrect diagnosis and the patient sues.
a doctor studies pain levels in 88 patients to see if their chronic arthritis pain has been changed by a holistic
The manufacturer wanted to determine if the tires were exceeding the guarantee. At the .05 significant level, it was concluded that the tires are exceeding the manufacturer's guarantee.
The circumferences of battery posts in a nickel-cadmium battery are Weibull-distributed with v = 3.25 centimeters, ß = 1/3, and a= 0.005 centimeters.
The rockets are playing Lakers tonight in basketball. The lakers average 90 points a game, with a SD of 10. What would the rockets need to score to be 80% sure of victory, 90% sure, 95% sure.
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