An airplane bomber carries 12 bombs. Half are small and half are large. One-third of the small bombs are faulty and will not explode if released. Two-thirds of the large bombs are faulty. If three randomly selected bombs are dropped, what is the probability that they will all explode?
What will be an ideal response?
Correct Answer:
(6/12)(5/11)(4/10)
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Which of the following symbols represents a population parameter?
a. SD b. ? c. r d. 0
During 2nd grade, the average increase in cwpm per week is:
A) .85-1.5 words. B) 1-3 words. C) 2-3 words. D) 2.5-3.5 words.
Explain how nursery schools influenced the preparation of early childhood education professionals
What will be an ideal response?
A data analyst for a large games software company conducted research into the influence of online gaming (measured in minutes daily spent playing online games) and studying (measured in minutes daily spent studying) on male adolescents’ academic performance (measured by an end of term test score). She reported the following: Gaming (centred), b = 0.190, t = 3.23, p = 0.015. How would you interpret her findings?
A. At the mean value of online gaming, there is a significant negative relationship between studying and test score. B. At the mean value of online gaming, there is a significant positive relationship between studying and test score. C. At the mean value of online gaming, there is no relationship between studying and test score. D. At the mean value of online gaming, there is a significant relationship between studying and test score.