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A market research firm conducts telephone surveys with a 30% historical response rate. What is the probability that in a new sample of 300 telephone numbers, at least 75 individuals will cooperate and respond to the questions? In other words, what is the probability that the sample proportion p will be at least 75/300 = 0.25? 0.9706
Assistant dean use a sample of application to determine whether the mean examination score for freshman application has changed. State the hypothesses.
A cereal manufacturer wants to determine if the filling machine is operating to specifications. The machine is specified to fill to a 12oz level.
Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work so I can see how to do this for the future. This one is good example of what I can do in future for real estate.
Use the given margin of error, confidence level, and population standard deviation (o) to find the minimum sample size required to estimate an unknown population means (u)
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?
Explain the difference between descriptive and prescriptive (optimization) models. Describe how to use Excel data tables, scenario manager, and goal seek tools to analyze decision models.
Assuming the validity of this premise, among 25 randomly selected current customers, what is the probability that between 2 and 6 (inclusive) qualify for membership?
If one investment can give you $1200 with a probability of .20 and you could lose $800 with a probability of .80, and another investment can give you $600 with a probability of .70 and a loss of $300 with a probability of .30, which investment is ..
According to the regional bar assoc., 60% of people who take the bar exam pass. Find the approximate probability that at least 61% of 200 randomly selected people taking the bar will pass. Round to three decimal places as needed.
Market researchers use it by correlating product attribute ratings with a dependent measure such as overall satisfaction. They then rank the product attributes to determine which attributes are the most important. They call this Key Driver Analysi..
A least squares linear trend line is just a simple regression line with the independent variable being time (months or years for example).
What is the probability that the contaminated can is selected for testing?
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