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Question: High-speed Internet Laying fiber-optic cable is expensive. Cable companies want to make sure that if they extend their lines out to less dense suburban or rural areas, there will be sufficient demand and the work will be cost-effective. They decide to conduct a survey to determine the proportion of households in a rural subdivision that would buy the service. They select a simple random sample of 5 blocks in the subdivision and survey each family that lives on one of those blocks.
(a) What is the name for this kind of sampling method?
(b) Give a possible reason why the cable company chose this method.
Work standards specify time, cost, and efficiency rooms for the performance of work tasks. They are typically used to monitor job performance. In the distribution centre of McCormick and Co. Inc, data were collected to develop work standards for t..
A professor has two light bulbs in his garage. When both are burned out, they are replaced, and the next day starts with two working light bulbs.
Consider the following time series.t 1 2 3 4 5 6 7Yt 120 110 100 96 94 92 88a. Construct a time series plot. What type of pattern exists in the data
What is a point estimate of the P/E ratio for the population of stocks listed on the New York Stock Exchange? Develop a 95% confidence interval.
Fnd the probability that the face showing up a six turns up between 10 and 30 times. Find the probability that the sum of the face values of the 100 trials is less than 250.
What is the expected number of people you must meet until you encounter the first person of Hawaiian ancestry in the village of Nanakuli?
Suppose that population variances from both conditions are equal is there evidence that treatment decreases surface hardness of steel plates?
Explain the relationship between data, quality and safety.
The test statistic for a two-sided significance test for a population mean is z = -2.12. What is the corresponding P -value?
A school accepts the top 10% of the applicants based on the entrance exam. The scores are normally distributed with a mean of 88 and a standard deviation of 3. What is the cutoff score to be admitted to the school?
The northern and southern halves of the state
The width of the interval with the finite population correction factor is wider than the confidence interval without the finite population correction factor.
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