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Suppose that 30% of the population has black hair. In a randomly-selected group of six people, how probable is it that
a. none of them has black hair?
b. more than four of them have black hair?
Calculate the mean, median and mode for both sets and do graph/histogram to chart the results and conclude if indeed one set of year had more the other as far a snowfall.
A 95% confidence interval for the average difference between the two reaction times (traditional - LED) was (-171.37, 174.44). Which of the following is the appropriate conclusion?
Perform a linear regression, 8 month moving average & 3 month moving average forecasting technique to see which is most accurate for the new quarter 11 if quarter 11 sales are 172,000 units
A firm keeps account for 28 customers. 12 of these are defined as new customers and 14 are locally based. If just 3 new customers live locally, how many established customers do not live locally?
Impact on sampling of increasing sample size is: The potential for extreme sampling error is reduced.
According to a hospital administrator, historical records over the past 10 years have shown that 20 percent of major surgery patients are dissatisfied with after-surgery care in the hospital. A scientific poll based on 400 hospital patients has ju..
Supposing that both populations are normally distributed, construct a 99% confidence interval for the ratio of the two population variances.
The following survey questions have been established for a medical errors and patient safety business research paper:
The following data provided by a coffee company are the roast time in minutes for five batches of coffee (x) and the resulting shrinkage in percent of the coffee weight(y).
Harrington Health Food stocks 5 loaves of Neutro-Bread. The probability distribution for sales of Neutro-Bread is listed in following table. How many loaves will Harrington sell on average?
Find the strategy that maximizes the manufacturer's expected net earnings and Should the manufacturer routinely obtain credit rating reports on those retailers who seek credit approval? Why or why not?
It takes between 6 to 7.5 hours to drive from Panama City to Boquete, and the drive time is uniformly distributed.
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