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In a large retirement community, 60% of households have no dogs, 30% have one dog, and 10% have two dogs. Following a news story about how the elderly have trouble walking their dogs in the winter weather, a magnanimous group of teenagers decides that it will randomly select two households in the retirement community each and call and offer to walk their dog(s). For each teen who participates, T is the total number of dogs in the two households called.
a. List all possible values for T.
b. Find the sampling distribution for T. (Hint: This is simply a list of possible values for T and their probabilities.)
c. If there are no dogs in the two households (T = 0), the teen starts over with a new sample of two households. If 1000 teens participate, for about how many of them will T = 0 for their first sample?
A company has just manufactured 1694 CDs and 376 are defective. If 9 of these CDs are randomly selected for testing, what is the probablity that the entire batch will be accepted?
Write a system of inequalities representing this situation. Then draw a graph of the feasible region given these conditions, in which x is the number of AM radios and y is the number of AM/FM radios.
a statewide survey of 1706 california adultsrsquo residents include the following question would you favor or oppose
We finally assume that the initial amplitudes of the pulses are independent of the Poisson process. Compute the expected value of the total amplitude at time t.
Natural Science, 415; Social Science, 511; Business Administration, 619; Philosophy, 196. Create a Pareto chart representing this information.
about 3 of the population has a particular genetic mutation. 500 people are randomly selected.find the mean for the
Discuss the null hypothesis. How is it framed? What is the alternate hypothesis? How does it relate to the null hypothesis?
question the annual sales of playground equipment follow the normal distribution. however the mean and standard
In order to compare the means of two populations, independent random samples of 484 observations are selected from each population, with the following results:
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
How is a sampling distribution of the mean similar to and different from a distribution of raw scores? What is the standard deviation of a sampling distribution of the mean called? How is it affected by sample size?
Calculate the Shut Down Point of Precision Engineering Department
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