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Suppose that 10% of the population of the U.S. is left-handed. If a random sample of 155 people from the U.S. is chosen, approximate the probability that more than 12 are left-handed. Use the normal approximation to the binomial with a correction for continuity.
Where could I find credible published data, with specific numbers on influenza and find the crude death rate, infant mortality rate and the incidence rate from two countries?
the probability is 1 that an electrical connector is kept dry fails during the warranty period of a portable computer.
A grocery store has 6 cashiers on duty, 10 baggers, and 4 people who will help customers load their groceries into a car. How many different checkout crews are possible?
On the basis of past history, a car manufacturer knows that 10% (p = .10) of all newly made cars have an initial defect. In a random sample of n = 100 recently.
By definition, these are not consistent - e.g. the effect of temperature is different at the two photo-periods. What to do if an interaction is present?
The rest have no opinion. " Suppose that a a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
The height and diameter of 31 trees of a certain species were measured, the trees were cut down, and the volume of usable lumber was determined. Find the explanatory variable(s) in this study are
A student doing a project for a statistics class wants to estimate the difference between the mean number of music CDs owned by male and female students.
Determine the largest plausible average balance for the accounts of those using her managed fund in which you could have 90% confidence.
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
If we assume that the download times are normally distributed, what percent of users will wait between 5 and 10 seconds for the homepage to download?
1. Plot the data. Does there seem to be a linear relationship between the discount offered and sales on "Big Saturday" events? Yes or No 2. Calculate a regression line for this data (use whole numbers for the percent discount, that is, use 15 f..
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