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Explain whether x‾ or μ is the correct statistical notation for each mean described.
a. The mean hours of study per week was 15 hours for a sample of n =- 30 students at a college.
b. A university administrator determines that the mean age of all students at a college is 20.2 years.
the cost of a college education has increased at a much faster rate than costs in general over the past twenty years.
in a certain city 40 consider themselves conservatives c 35 liberals l and 25 independents i. during a particular
the mean cost of a wedding is 28732. suppose the cost for a wedding is normally distributed with a standard deviation
use the frequency distribution table below that shows the results from a survey which asked 200 households how many
An Electric Co. Operates a fleet of trucks that provide electrical service to the construction industry. Monthly mean maintenance cost has been $75 per truck.
1.bias of a statistic refers toa.the difference between a statistic and the actual parameter.b.whether or not questions
A critique is a review and commentary on a particular article or piece of research. It is not necessarily critical in the negative sense, although you may need to comment negatively on some aspects; both positive and negative aspects should be treate..
Use methods of undetermined coefficients to find one solution of:
What is the conditional probability that the down time is longer than 236 days given that it is already longer than 227 days?
construct a 90% confidence interval for the true mean weight. what sample size would be necessary to estimate the true weight with an error +/- 0.03 grams with 90% confidence?
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)?
Find the velocity and acceleration vectors of the insect at time t, and show that the angle between these vectors is always π/4.
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