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The number of dogs per household in a small town
Dogs
0
1
2
3
4
5
Probability
0.663
0.213
0.082
0.020
0.014
0.008
?(a) Find the? mean, variance, and standard deviation of the probability distribution.
the speed at which you can log into a website through a smartphone is an important quality charactersitc of that
q1. length of pregnanciesthe length of human pregnancies from conception to birth varies according to a distribution
Use Benford's distribution to calculate the probability of each digit and record your results in the table above. Comment on how closely your distribution of first digits follows Benford's distribution. Why are they not exactly the same?
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
A large furniture retailer wants to conduct a customer satisfaction survey. Customers are divided into groups based on the amount of money
The problem is to perform a simulated experiment, with the help of variance-reducing techniques, for estimating the mean of this distribution. To provide a standard of comparison, also derive the mean analytically.
Absenteeism. A company's records indicate that on any given day about 1% of their day-shift employees and 2% of the night-shift employees will miss work.
What is the difference between a parameter and a statistic? Describe an example. Finally, there are "adjustments" that statisticians make to statistics
Show a block diagram of the system, giving its transfer function and all pertinent inputs and outputs.
Timber! A lumber company wants to estimate the proportion of trees in a large forest that are ready to be cut down. They use an aerial map to divide the forest.
A nutritionist conducted an experiment on memory for dreams. She wanted to test whether it really was true that eating cheese before going to bed made you have bad dreams. Over three nights, the nutritionist fed people different foods before bed.
Show that if n ≥ 2k - 1, there is a strategy that assures you of identifying one of 2k - 1 numbers and hence gives a probability of (2k - 1)/n of winning. Why is this an optimal strategy? Illustrate your result in terms of the case n = 9 and k = 3..
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