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A bank has determined that the monthly balances of savings accounts of its customers are normaly distributed with an average balance of $1200 and standard deviation of $250. What proportions of the customers have monthly balances less than $1000?
Find out the probability that temperature of oven will range from 460 to 470 F?
If a worker at this fast food restaurant is selected at random, what is the probability that the worker earns more than 6. 75.
According to Chebyshev's theorem, proportion of values from data set that is further than 2 standard deviations from the mean is at most?
The standard deviation was $6050. Is there evidence at the 1% significance level that the cost of attendance has increased? State the hypothesis?
(a) State the hypothesis for a right-tailed test. (b) Obtain a test statistic and p-value assuming equal variances. Interpret these results. (c) Is the difference in mean scores large enough to be important?
Compute sample mean. Assume that desirable value for this solution has been specified to be 65.0 grams per liter. Compute sample variance and sample standard deviation.
Consider a liter of 5 puppies (3 brown/2 black). Draw a probability tree indicating the probabilities for selecting 3 puppies without replacement? What is the probability that I will select 3 brown puppies? 1 brown and 2 black puppies? At least 1 ..
They plan to set up a radar trap and check the speeds of 80 randomly selected cars. Can this distribution be approximated by a normal curve?
What is Optimal solution? Using Linear Programming or any other methods (Optional) Explain in Detail What does it mean "Optimal Solution"?
Carbon monoxide (CO) emissions for a certain kind of car vary mean 2.4 g/mi and standard deviation 0.7g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the companies fleet. Estimate the probability that y is ..
Determine the probability of examining a sample mean weight from any 20 women chosen from this population that is less than S (your sample mean) by using population standard deviation?
Find the Probability and inverse probability for the given Normal distribution.
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