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Assume the poisson distribution applies. Use the given mean to find the indicated probability.
find P(6) when mean = 8
The firm uses $200,000 of its cash balance to pay off a current liabilities. Calculate the current ratio before and after this transaction.
You wish to be 95% confident and have an error of 0.4 mpg. The standard deviation is estimated at 1.8. How big must the sample be?
People who answered incorrectly, 26 are men. The question was given to an equal number of men and women all with the same IQ. Find the probability that among 120 wrong answers, at least 82 made by men.
A normal population has a mean of 75 and a standard deviation of 5. You select a sample of 40. Compute the probability the sample mean is
The data below show the average daily high temperature for Chicago, Illinois, for twelve recent spring and summer months. Create a stem-and -leaf diagram for the data.
Describe what type of control chart you can use and how do you calculate the control limits to check if the software design process in this organization is in control.
Normally distributed with a mean of 113 grams and a standard deviation of 5.4 grams. Find the probability that if 7 bags are randomly selected, their mean weight exceeds 114 grams.
Develop a 95% confidence interval for the proportion of the population of adults who feel customer service is better today than it was 2 years ago.
Given that 30% of US adults are smokers, find the average of the random variable X= # of smokers in a random sample of 50 residents of the USA, also find the variance and standard deviation of X.
If the Sum of Squares for Treatments (SST) is 10% of SS(Total), and the Sum of Squares for Blocks (SSB) is 20% of SS (Total), find the F values for this experiment.
Intersection of two mutually exclusive events: can be any value between 0 to 1, must always be equal to 1.
During nine days in a festival, the highest sale of a shop was on sunday and was 900„5 more than the average sale for other days. If the standard deviation of the sale during the festival is 33.33, find the standard deviation leaving that the highes..
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