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95% confidence interval for the proportion of adults who believes that economic conditions are getting better. A gallup poll taken estimates this proportion to be 0.33. What sample size is needed so that the confidence interval will have a margin of error of 0.032?
an engine oil supposed to have a mean viscosity of micro 85.0. a sample of n25 viscosity measurements resulted in a
The final exam scores for 15 students are 73, 74, 92, 98, 100, 72, 74, 85, 76, 94, 89, 73, 76, 99. Compute the mean and median.
Interpret the slope and y-intercept of the line, in context.- The largest residual, with a value of -348.6, is for the town of Exeter. Explain what this value means.
Referring to the table above, the researcher was attempting to show statistically that the female MBA graduates have a significant lower mean starting salary than the male MBA graduates
Analyze the table data to conclude whether the distribution of cars that earned the Top Safety Picks safety award has remained the same between 2009 and 2013.
Suppose that the company is willing to consider dropping the distribution center limitations; that is, customers could be served by any of the distribution centers for which costs are available. Can costs be reduced? By how much - If the company d..
An order for an automobile can specify either an automatic or a standard transmission, either with or without air conditioning, and with any one of the four colors red, blue, black, or white. Describe the set of possible orders for this experiment..
Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a standard deviation of 12. What is the probability that a randomly selected individual has a diastolic blood pressure less than 90?
Five boxes of random access memory chips have 100 units per box. They have respectively one, two, three, four, and five defective units.
provide an appropriate response. define independent and dependent samples and give an example of
an estimate of a population parameter that provides an interval of values believed to contain the value of the
The population variances are 4.6 and 5.0 respectively. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades?
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