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You are conducting a survey at college with 800 students, 50 faculty members, and 150 administrative staff members. Each of these 1,000 individuals has a single listing in the campus phone directory. Suppose you were to cut up the directory and pull out one listing at random to contact. What is the probability it would be:
a) student,
b) a faculty member,
c) an administrative staff member,
d) faculty or administrative staff member, and
e) anyone except and administrative staff member?
Explain your answer to someone who has never had a course in statistics.
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What is the sample space for this process and evaluate the variance of the intelligence scores
A regression model between sales (Y in $1,000), unit price (X 1 in dollars) and television advertisement (X 2 in dollars) resulted in the following function: = 7 - 3X1 + 5X 2 For this model SSR = 3500, SSE = 1500, and the sample size is 18...
Using the probabilities above what is the expected size of family you draw?
If a technical breakthrough occurred that raised the profit per unit of X 1 to $3, would this affect the optimal solution?
Write down the advantages and disadvantages of using computer software for decision making.
he population consists of all 15 year olds living in the attendance district of a local high school. You plan to obtain a simple random sample of 200 such residents by using the roster of the high school as the sampling frame.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
A busy landscaping supplies company sells wood chips for garden mulch. The mulch is sold by the cubic metre and delivered to households in a small truck.
Drug sniffing dogs must be 95% accurate. A new dog is being tested and is right in 46 of 50 trials. Find a 95% confidence interval for the proportion of times the dog will be correct.
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