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Suppose a marketer in a pharmaceutical company wants to determine how many allergy suffers are helped by the company's product, with a 3% margin of error at the 98% confidence level. How many subjects must be tested to determine the effectiveness of the product?
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Using the 0.95 degree of confidence, what is the interval estimate for the population proportion (to the nearest tenth of a percent)?
Key Refining decided to send a special financing plan to charge account customers having the highest 10 percent of the money charges. What is the dividing point between customers who receive the special plan and those who do not.
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Given this, compute the following probabilities for demand during lead time(DDLT).
Find out the test statistic s and its two-sided P -value. Do data give good evidence that population mean is not zero?
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.
Compute the variance and standard deviation
Utilizing the 5% level of significance as there was a significant change in cholesterol level. Their total cholesterol levels before also after the diet.
Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production during this time period.
Write a one-page report to Ms. Gupta presenting your conclusions regarding the market performance of Brand 1.
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