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A prominent oncologist decides to conduct a randomized trial, in which his patients are randomized to either the current therapy or a new treatment. If the mortality rate on the current therapy is 8% and the mortality rate for patients on the new treatment is 4%, how many patients would he need to treat to prevent one death?
Can you conclude that information in article is untrue? Use 0.05 significance level. Find out p-value and explain its meaning.
Use regression to develop a trend line that could be used?to forecast monthly sales for the next year. Is the slope of?this line consistent with what you observed in question 1? ?If not, discuss a possible explanation.
Assume that a WIN results in a value of 1.0 and LOSE results in a value of 0. Further, assume that the probability of converting a 2-point conversion is p=0.4.Should Temple's coach go for a 1-point conversion or 2-point conversion after scoring th..
A financial institution transfers a large data faile every evening from offices around the world to its San Antonio headquarters. Once the file is received, it must be cleaned and partitioned before being stored in the company's data warehouse.
How large a sample should we take if we wish the 95% margin of error to be plus or minus $15.00. Assume from previous studies that the standard deviation is $120.
What is the probability the average of the sample is more than $38000 and What is the standard deviation of the sample mean
What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
A regression analysis was carried out of returns on stocks (Y) versus the ratio of book to market value (X). The resulting prediction equation is Y = 1.21 + 3.1X (2.89) where the number in parentheses is the standard error of the slope estimate. The ..
Formulate a linear programming model to determine how many salespeople should be assigned to each area next week to maximize profits.
an electrical engineer is reporting one the results for a process that manufactures high-voltage supplies with a
Use technology to find the estimated minium required sample size. The minimum sample size required is ? Computer users round to the nearest whole number. What is a major obstacle to getting a good estimate of the population mean?
question scores are obtained from the law school admission test lsat are normally distributed with a mean score of 550
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