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Question: A random sample of 50 households was selected for a telephone survey. The key question asked was, Do you or any member of your household own a cellular telephone with a built-in camera? Of the 50 respondents, 15 said yes and 35 said no.
a. Determine the sample proportion, p, of households with cellular telephones with built-in cameras.
b. If the population proportion is 0.40, determine the standard error of the proportion.
If the microbrewery seeks a 95% confidence level and a precision of .5 beers, what size sample should be used in the study? Show the calculation; otherwise, the answer will not be accepted.
The U.S. Bureau of Labor Statistics releases figures on the number of full-time wage and salary workers with flexible schedules.
Give a brief definition and an example of the following: a. Descriptive Statistics b. Inferential Statistics
briefly restate your research area of interest.a. pearson correlation. identify two variables for which you could
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Each parent ranks the four names in order of preference. Given each of the following decision rules, determine whether it is a social choice function.
What is the approximate distribution of the mean NOX emission level x for these cars? (b) What is the level L such that the probability that x is greater than L is only 0.01?
Consider the following linear programming problem: A workshop of Peter's Potters makes vases and pitchers. Profit on a vase is $3.00; profit on a pitcher is $4.00. Each vase requires ½ hour of labor, each pitcher requires 1 hour of labor.
a competency test has scores with a mean of 69 and a standard deviation of 4. a histogram of the data shows that the
State the Null Hypothesis and the Alternative Hypothesis. Determine the test statistic. Determine the P-value
According to one study, 21% of all college students nationwide identify themselves as politically liberal. You suspect this percentage may be different at Swarthmore. You plan a survey of first-year students to test your suspicion. What hypotheses..
In the United States, on average, what is the age difference between husbands and wives?- What is the difference in average ages at which teachers and plumbers retire?
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