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Question: A survey of 21,250 households concerning telephone service gave the results shown in the table.
a. Give a point estimate for the proportion of all households in which there is a cell phone but no landline.
b. Assuming the sample is sufficiently large, construct a 99.9% confidence interval for the proportion of all households in which there is a cell phone but no landline.
c. Give a point estimate for the proportion of all households in which there is no telephone service of either kind.
d. Assuming the sample is sufficiently large, construct a 99.9% confidence interval for the proportion of all all households in which there is no telephone service of either kind.
List an example of Two quantitative variables that are likely to have a positive linear relationship, Two nominal variables that are likely to be independent.
1. a previous survey showed that 83 of the people who take the daily newspaper read the sports section. what sample
a. Is there a statistically significant relationship between these variables?
The following table gives the two-way classification of 1000 persons who have been married at least once. They are classified by educational level.
A manufacturing company must decide whether to manufacture a component part. The consulting profit is dependent upon the demand for the product. The following show the projected profit ( in thousands of dollars).
Company wishes to exceed on-time rate of competitors at new hub. Hundreds of flights arrive at location daily. Determine the main advantages and disadvantages of employing sampling in application?
What do we need to consider when we try to select a test? Choose one of the tests; discuss your understandings of that test.
How strong is the evidence that SAT Score is a good predictor of GPA? What concerns you about the graph, the statistical methodology or the conclusions reached?
Assume if the students toss the coin 200 times each about 68% should have proportions among what two numbers.
Please explain by using the traditional methods for testing hypotheses and showing the results of all steps in the process.
there are 150 books in a professors office. you take a random sample of 8 of these books and count the number of pages
After reading "Homosexuals in the Churches," I'd like to point out that I don't know any serious, capable exegetes who stumble over Saint Paul's denunciation.
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