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RC Cola claims that 20 percent of the population can identify its products. in efforts to boost their identity, RC cola employs a famous spokesperson to advertise. a survey is then taken to asses the results of the ad campaign. the results show that 21 percent of the 1000 respondents can identify RC Cola products. has the advertising campain made any difference in the product identity? use 0.05 significance level. a. state the null hypothesis HO: H1: B state the decision rule c. compute the value of the test statistic d. estimate the p value e. what is your decision regarding null hypothesis?
What are the input and the output of linear regression, and what does the coefficient of determination measure and what is the purpose of measuring correlation?
Definition of complete groups of events:A complete group of events is a group of incompatible events, such that at least one of them must occur as a result of an experiment.
on a standard iq test the standard deviation if 15. how many random iq scores must be otained if we want to find the
a survey was completed and the following two wage classes were used 4 - 7 and 7 - 10. what is the class interval for
An advertising agency that serves a major radio station wants estimate the mean amount of time that the station's audience spends listening to the radio daily.
What percentage of the students scored below student in Verbal Skills - What percentage of the students scored above student in Mathematics?
In 1992, the FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive. (a) Construct a 95 percent confidence interval for the population proportion..
question assume that breast cancer affects .8 percent of the female population between 40 and 50 years of age. there
the telephone company wants to investigate the desirability of beginning a marketing campaign that would offer
fifty people in the civilian labor force are randomly selected and the sample average age is computed to be 36.4.a find
their average cost was 340.00 with standard deviation of 80.00. Dean of students thinks that costs are greater this semester. Determine the test value for this hypothesis.
A high-speed train is under development in Texas [21] with a design based on the French Train a Grande Vitesse (TGV). Train speeds of 186 miles per hour are foreseen. To achieve these speeds on tight curves, the train may use independent axles com..
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