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Several psychology students are unprepared for a surprise true/false test with 11 questions, and all of their answers or guesses.
Find the mean and the standard deviation for the number of correct answers for such students.
Would it be unusual for a student to pass by guessing a getting at least 5 correct answers?
A measure of central tendency, and variability. Report the findings in the APA format and write a brief paragraph describing your findings.
the guidance system for a rocket operates correctly with probability p when called upon. independently but identical
Do any of the selected samples seem to be out of the control limits? Describe.
students enrolled in an introductory statistics course at a university were asked to take a survey that indicated
In a column, write the sample space for the experiment that consists of observing the day's production.
A manufacturer of car batteries claims that his batteries will last, on average, 3 years with a variance of 1 year. If 5 of these batteries have lifetimes of 1.9, 2.4, 3.0, 3.5, and 4.2 years
question 1 explain the continuity correction factor and provide a good example. 3-4 paragraphsquestion 2 randomly
The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution
Construct a 94% confidence interval for the true percentage of smokers among all people who completed four years of college.
What statistical tests can perform to compare two groups asked the same question, when the question has a yes/no answer and the sample groups are different.
It was reported that approximately 45% of all university professors are extroverted. Suppose you have classes with 6 different professors.
Our psychology department received a new statistics text for review. Prof. Smart in his review provided an interesting table of corrections.
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