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We know many types of data fall into a normal distribution with most of the observations falling toward the middle. However, sometiems data are outliners or data that are very different- larger or smaller- from the rest of the members of the sample. Think of an example in the real world of an outlier and discuss its effect
the time it takes a cell to divide called mitosis is normally distributed with an average time of one hour and a
To determine whether or not they have a certain desease, 80 people are to have their blood tested. However, rather than testing each individual separately, it has been decided first to group the people in groups of 10.
a market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser
Using an investment game, the study demonstrated that people who inhaled oxytocin were more likely to give their money to a trustee compared to people who inhaled an inactive placebo. For this experimental study, identify the independent variable ..
a coin is known to be either fair corresponding i the null hypotheses h0 p12 or has heads on both sides corresponding
Suppose 10 balls, numbered 1-10, are to be distributed randomly into 10 boxes. a) What is the probability all 10 balls are placed into one box? b) What is the probability that no boxes are empty?
Compute the test statistic for the goodness of fit test. At 95% confidence using the p-value approach, test the hypotheses. What do you conclude about the distribution?
Body mass index is measured as the ratio of weight in kilograms to height in meters squared. Generate a 95% confidence interval estimate of the true BMI.
a suppliers process operates at a fallout level of 0.06 defective. lots are required to be shipped from the supplier.
ABC Convenient stores uses fixed-time period model to determine order quantity for their popular chewing gum (Supergum). Daily demand for Supergum is 100 units with a standard deviation of 25 units.
A sample proportion is calculated from a sample size of 394. How large of a sample would we need in order to decrease the standard error by a factor of 9?
if x units of product cost c dollars to manufacture and earn revenue of r dollars the values of x where the expressions
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