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A pair of dice is rolled. What is the probability of each of the following? (Round your answers to three decimal places.)
a) the sum of the numbers shown uppermost is less than 6.
b) at least one 3 is cast.
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
We are interested in testing to see if the variance of a population is less than 7. The correct null hypothesis is:
determine if the improvement is of practical significance one should. Crop researchers plant 100 plots with a new variety of corn. The average yield for these plots is x' = 130 bushels per acre
What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?
Determine a 95 percent confidence interval for the population mean.
Can we conclude there is a difference in mean number of surgeries performed by hospital or by day of week?
Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
State the appropriate set of hypothesis to test whether there is a relationship between the variables X and Y.
A sample of 100 observations has a mean of 2.99 and a standard deviation s equal to 0.5 Conduct the following test of hypotheses about the corresponding population mean at a level of significance of α = 0.2
Increasing the confidence-interval level from .95 to .99
By using significance level a = .05, and suppose a normal distribution what does evidence conclude?
Solve different inventory control problems using an appropriate OR method.
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