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Given a sample of 50 IQ scores ranging from 80 to 145, if the 145 were accidentally typed in error as a 415, what would be the impact on the following statistics? Answer with increase, decrease, or remain the same.
* The mean.* The median.* The standard deviation.* The range.
A fast-food franchiser is considering building a restaurant at a certain location. Based on financial analysis, a site is acceptable only if the number of pedestrians passing the location averages more than 100 per hour.
Doctors nationally believe that 68% of a certain type of operation are successful. In a particular hospital 47 of these operations were observed and 37 of them were successful. At a = 0.05 is this hospital's success rate different from the nationa..
Does the sample show sufficient reason to conclude that the population standard deviation is not equal to 8 at the 0.05 level of significance?
Crete a 90% confidence interval for mean Secchi dish measurement.
Define decision variables clearly. Formulate this as a linear programming problem and solve it with a detailed description of your output. Please include all output information.
What is the 95% confidence interval estimate of the population mean cost for a prescription of Zocor?
The scores of students taking the Scholastic Aptitude Test (SAT) are normally distributed with a mean u = 1035 and a standard deviation o = 131.
Assume that a simple random sample of a population has been selected from a population that has a normal distribution, Use the formula for X2( chi square distribution) and the chi-square distribution table
Choose the Hypothesis. Specify the Decision Rule. Calculate the Test Statistic. Make the Decision. Give an interpretation of the Decision
Suppose the sample variance for 3 parts turns out to be S2 = .0005. Use a=.05 to test whether the population variance specification is being violated.
In the following questions, you should demonstrate your understanding of sampling distribution:
To test whether the population mean is less than a specified value.
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