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Mimi plans make a random guess at 10 true-or-false questions. Answer the following questions:
(a) Let X be the number of correct answers Mimi gets. As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively?
(b) Find the probability that she gets at most 5 correct answers. (Round the answer to 3 decimal places.
(c) To get the answers for part (b), what technology did you use? If an online applet was used, list the URL and describe the steps. If a calculator or Excel was used, write out the function.
an exit poll of 1000 randomly selected voters found that 515 favored candidate a. is the race too close to call? answer
in order to determine the summer unemployment rate among college students a pilot sample was taken and it was
A prison official wants to estimate the proportion of cases of recidivism. In examining 250 convicts there are 65 cases. with 99% confidence interval what is the range? How do you figure this type of problem?
To help the manufacturer get a clear picture of type I and type II error probabilities, draw a ß versus α chart for sample sizes of 30, 40, 60, and 80. If ß is to be at most 1% with α = 5%, which sample size among these four values is suitable?
(a) What is the probability that a given number will be less than 50? (b) What is the probability that each of the three numbers generated will be less than 50
Create a research question for which the appropriate test of the statistical hypothesis would require the use of a z-score.
Produce a printout of the frequency tables, showing the total of both frequencies.
The average number of microwaves sold in the city in 2015 was 2700 per day. Suppose the standard deviation is 1551 and the distribution is right-skewed.
the department of natural resources reports that a fish is unsafe to eat if the polychlorinated biphenol pcb
Draw a scatter diagram representing these data.- Using the "eyeball" method, fit a straight line to the data.- Does there appear to be any relationship between the variables? If so, is the relationship direct or inverse?
Altogether, about 1,676,200 of those children returned to their homes. What was the probability of returning?
Differentiate between the coefficients of correlation and determination. What information does each one offer that the other does not?
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