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What is the relationship between Sample Size and the width of the Confidence Interval? Please explain further as to why. &Discuss the effect that the confidence level has upon the confidence interval.
telephone calls enter a switchboard at a rate of 3 calls per minute. assume that any given no more than one call will
Items coming off a production line are categorized as good (G), slightly blemished (B), and defective (D), and the percentages are 80%, 15% and 5%, respectively.
do males and females differ in the amounts they spend on valentines day? the average expenditure in a sample of 40 male
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.
Finding the probability of each event in a group of events of different possibility
what are the steps in the construction
Sketch density curves that might explain distributions with fallowing shapes: symmetric, but with two peaks( i.e., two strong clusters of observations)
For a population with a mean of μ = 60 and a standard deviation of σ = 24, find the Z score corresponding to each of the following samples.
Determine the point estimate? Give the symbol and value.
in some reports the mean and coefficient of variation are given. for instance in statistical abstract of the united
Distribution of Sample Means
Which statement about re-expressing data is not true? I. Unimodal distributions that are skewed to the right will be made more symmetric by taking the square root of the variable.
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