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A random sample of 8 was drawn and the sample variance was calculated to be 2.57. If the same data was used nut was treated as population data, what would the population variance be? Round your answer to 2 decimal places.
Modify the spreadsheet above to accommodate the possibility of v not equal to 1. Use excel data table (1 dimensional) to check the sensitivity of the portfolio's std dev as a function of v. Vary v from .05 to 1.5 in .05 increments.
What assumption about the population distribution is needed in order to conduct the t test.
A test statistic is computed from sample data in hypothesis testing and is used in making a decision about whether or not to reject the null hypothesis. True or False
Let X(n) be the number of individuals in the nth generation of a branching process (X(0) = 1), and set Tn = 1 + X(1)+ · · · + X(n), that is, Tn equals the total progeny up to and including generation number n.
ind a 95% confidence interval for the proportion of all prospective customers who are PC-savvy. - Find a similar interval for the proportion who are PC-illiterate.
assume that 1300 births are randomly selected and exactly 331 of the births are girls. use subjective judgement to
Newborn baby has extremely low birth weight (ELBW) if it weighs less than 1000 grams. A study of the health of such children in later years examined a random.
Calculate the probability that the median of the sample or average medians is:
if two fair dice are rolled six-sided what is the probability that the sum of the numbers rolled will add up to
If you have studied the central limit theorem, find the margins of error associated with a chance of .90 and a chance of .95. Compare these values with those calculated in step 2.
You should address the pertinent areas of consideration.Analyze the considerations and determine their relative importance.Investigate all the possibilities of how the quantitative methods are used in the case study.
The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.
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