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A bank has kept records of the checking balances of its customers and determined that the average daily balance of its customers is $300 with a standard deviation of $48. A random sample of 144 checking accounts is selected.
a. What is the probability that the sample mean will be between $302 and $308?
b. What is the probability that the sample mean will be more than $305?
c. There are 80% chances that the sample mean will be between which two value symmetrically distributed about the population mean?
Follow-up calls to a few randomly selected customers show that a 95% confidence interval for the proportion of all orders that arrive on time is What does this.
An extension of the classical model involves the use of areas. A certain region L (say of land) is taken as a reference.
The reason sample variance has a divisor of n-1 rather than n is that it makes the sample standard deviation an unbiased estimate of the population standard deviation.
Calculate correlation coefficient - Calculate coefficient of determination - shows the amount of money spent by 10 customers who visited a market in a certain year and their social classes' index.
in class we discussed what fraction of 7-foot or taller males of an appropriate age play in the nba. this exercise
Derive the probability that a receptor is occupied by a ligand using a model which treats the L ligands in solution as distinguishable particles.
Please explain in a way that it is easy to understand. Providing examples is helpful please.
Suppose a point in three-dimensional Cartesian space, (X, Y, Z) is equally likely to fall anywhere on the surface of the hemisphere - Find the PDF Of Z. - Find the joint PDF of X and Y.
a river is rising at a rate of 3 inches per hour. if the river rises more than 2 feetit will exeecd flood stage. how
If it is properly adjusted, a machine used to produce Good X produces 5 percent defective units of output. If improperly adjusted it produces 20 percent.
There is only one copying machine in the student lounge of the business school. Students arrive at the rate of ?=45 per hour?
Describe the nonequivalent control group pretest-posttest design. Why is this a quasi-experimental design rather than a true experiment?
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