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Let X1, ..., Xn be i.i.d. with unknown mean µ ∈ R and variance σ2 > 0. Assume that EX41 < ∞.="" using="" the="" sample="" variance="">2, construct a confidence interval for σ2 that has asymptotic significance level 1-α.
Statistics and Probability, Statistics
The height of woman ages 20-29 is normally distributed , with a mean of 64.3 inches. assuming the standard diviation = 2.4 inches. are you more likely to randomly select 1 woman with a height less than 66.2 inches or are ...
Two people agree to meet at a coffee shop. They each independently pick a random moment in time between 8 a.m. and 9 a.m. and show up exactly at their selected time. But they are very impatient, and only stay for 10 minu ...
You paid cash for $1,300 worth of stock a year ago. Today the portfolio is worth $1,888. a. What rate of return did you earn on the investment? b. Now suppose that you bought the same stock but bought it on margin. The ...
What can a continuum of elements in terms of strategic planning mean to performance to small-medium enterprises?
On the production line the company finds that 99.7% of products are made correctly. You are responsible for quality control and take batches of 30 products from the line and test them. What number of the 30 being incorre ...
In 20% of families the father has celiac disease (Event F) while the mother does not, in 15% of families the mother has celiac disease (Event M) and the father does not, and in 5% of families both the mother and the fath ...
How would I calculate this: Anystate Auto Insurance Company took a random sample of 382 insurance claims paid out during a 1-year period. The average claim paid was $1590. Assume σ = $234. Find a 0.90 confidence interv ...
What steps do I take to calculate :the personnel office at a large electronics firm regularly schedules job interviews and maintains records of the interviews. From the past records, they have found that the length of a ...
"A Financial Planning Licensee striving for excellence in their fiduciary duty has decided to set a maximum limit of gearing for all client financial plans they construct." Comment on the merit of taking such an approach ...
Suppose that the weight of all navel oranges is normally distributed with mean of 8 ounces, if we know that the percentage of oranges that weigh less than 8.7 ounces is 68% find the standard deviation?
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