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A campaign conducts a poll of 1500 registered voters, and finds that 54% intend to vote for candidate A, 32% intend to vote for candidate B (their candidate), and 14% are undecided. Undecided voters, and those intending to support candidate A, are asked what single issue might cause them to support candidate B. The topic of candidate B's stump speech is selected to focus on the issue cited most frequently.
I. What is the population?
II. What is the sample?
III. Is the study observational or experimental? Justify your answer.
IV. If observational, identify ALL variables. If experimental, identify ALL independent and dependent variables.
V. For each of the variables identified in part IV, list which of the four levels/scales of measurement was used to obtain data on these variables?
VI. Classify each of the variables identified in part IV as either attribute or numerical
The weight of an almond is normally distributed with mean 0.05 ounce and standard deviation of 0.015 ounce. Find the probability that a package of 100 almonds will weigh between 4.3 and 5.3 ounces.
suppose thw weekly amount spent on repairs at a certain computer is normally distributed with a mean of 300 and a
If you violate the INDIVIDUAL nature of the assignment, document the unauthorized help you receive by name and by the nature of the help received. There will be an academic penalty depending on the extent of the unauthorized help, but you will not..
would you favor or oppose providing a path to citizenship for illegal immigrants in the U.S if they met certain requirement including a waiting period, paying fines and back taxes, passing criminal background checks and learning English? What is the ..
The results are shown below. Research question: Are the mean waiting times the same for emergency patients in these four hospitals? Use 0.05 for the significance level in making your decision.
The results of a survey that collected the current credit card balances for 36 undergraduate college students are given in the file "College Credit Card.'
when only concerned about the results at one end of the distribution curve we use a one-tail test. we generally see a
dilbert is in charge of evaluating a new machine that manufactures shoelaces. in particular he needs to estimate the
determine whether each of the distributions given below represents a probability distribution. justify your
The table below shows the scores of a group of 15 students in mathematics and art: Determine if the locations of distribution of scores for these students differ significantly for the two subjects. Use the hand calculation method and then use PHSta..
A manuscript is sent to a typing firm consisting of typists A, B, and C. If it is typed by A, then the number of errors made is a Poisson random variable with mean 2.6; if typed by B, then the number of errors is a Poisson random variable
a brand name has a 40 recognition rate. assume the owner of the brand wants to verify that rate by beginning with a
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