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Acording to a survey published in the Financial Times, 56% of executives at Britain's top 500 companies are less willing than they had been five years ago to sacrifice their family lifestyle for their career.
If the survey consisted of a random sample of 40 executives, give a 95% confidence interval for the proportion of executives less willing to sacrifice their family lifestyle.
430 randomly selected light bulbs were tested in a laboratory, 224 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more than 500 hours.
Find an expression for the mth moment of an Erlang random variable whose PDF is given by function. -and positive n constant b.
Provo Co. has $15 million that it will not need until 1 year from now. It can invest the funds in U.S. dollar-denominated securities and earn 6 percent or in New Zealand dollars (NZ$) at 11 percent.
For commercial banks in each state, the U.S. Federal Deposit Insurance Corporation has determined the percentage of domestic assets. Construct a frequency distribution with 6 classes for this data.
a genetic test is used to determine if people have a predisposition for thrombosis which is the formation of a blood
A process starts in state 0. Annuity contract 1 provides for periodic payments, provided the process is in state 1. Find the probability that a payment is made at time 3.
You are trying to get an important new customer to buy a product that you produce. Their decision to buy depends on the speed at which you can produce the product once they have placed the order.
Consider the following inventory model, which is a single-period model with known density of demand elsewhere.
What is the prior probability the bid will be successful (i.e.. prior to receiving the request for additional information)?
This is to be based on a single variate analysis of the data provided, and its focus is on the interpretation of the output of the various charts/tables/statistical tests you choose to utilise. Clearly you must provide a rationale for such an analysi..
In evaluating a poll, a larger sample size would be considered more favorably, but what consideration would you consider even more important than the sample size before trusting the validity of the poll?
At the 0.05 level of significance, test whether the software package has reduced the average time it takes to complete deliveries.
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