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A consumer products company surveys 30 shoppers at a mall and asks each one if he/she likes the packaging of a new soap product. The results of the survey are:
Yes: 10; No: 19; No opinion: 1.
(a) Use these data to estimate the proportion of shoppers who would like the package for the soap.
(b) Suppose the company gathered these data by talking to customers in one of their stores. What impact might this have on the results. Suggest a better way to gather the data.
the population in millions and the violent crime rate per 1000 were recorded for 10 metropolitan areas. the data are
Use the given information to estimate the probability that a newborn baby is male, given that the ultrasound predicted the baby would be male.
That 95% of all daily sales fell between $19,200 and $36,400. Based on this information what were the mean sales? What was the standard deviation?
State the values of the coefficient of correlation and coefficient of determination correct to three decimal places
Let X1,..., Xn be a random sample from the uniform distribution f(x) = 1/2, 0 ≤ x ≤ 2. Find the probability density function for the range R = (X(n) - X(1)).
What types of variables are measured using Pearson coefficient, and what types variables are measured with chi square; I am looking for names of variables (e.g., nominal, interval)?
One table has a standard deviation of $50 while the other has a standard deviation of $150. What conclusion can be drawn from the data?
The cholesterol levels of a population have a normal distribution with a mean of 160 and a standard deviation of 30 how you I find the percentage of the population with cholesterol levels above 200.
A final exam in Math 157 is normally distributed and has a mean of 75 with a standard deviation of 12. If 36 students are randomly selected, find the probability that the mean of their test scores is greater than 70.
Initially the wheel rotates with an angular speed W, causing the block to rise with a linear speed v = 0.33 m/s. Find the moment of inertia of the wheel if the block rises to a height of = 7.9 before momentarily coming to rest.
Suppose a major real estate development corporation has hired you to research the features of housing for which people will pay the most in making a home purchasing decision.
an airline company is considering a new policy of booking as many as 281 persons on an airplane that can seat only 270.
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