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How large a sample is needed to guarantee that the distribution of sample means is approximately normally distributed? Why?
The acceptance rate for applicants with similar qualifications is 30% for University X and 55% for University Y. What is the probability that Jim will be accepted by at least one of the two universities?
What is the probability that of today's 1,100 callers at least 5 received a busy signal? Use the poisson approximation to the binomial.
The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.
You are trying to get an important new customer to buy a product that you produce. Their decision to buy depends on the speed at which you can produce the product once they have placed the order.
The pooled variance of two samples is:
In the following example, why would Chebyshev's Theorem be used instead of the Empirical Rule?
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
Critically discuss the mean number of children per household for these families? Round your answer to at least one decimal place.
Describe what do you mean by terms 'false positive" and " false negative".
In a random sample of 400 employees of a local company, 180 were female. At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
What is the difference between the critical-value method and the p-value method of hypothesis testing? Include in your post how the question's topic pertains to your health discipline.
Let x be the weight of a fawn in kilograms. Convert the following x interval to a z interval. Round to the nearest hundredth.
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