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A believer in the random walk theory of stock markets thinks that an index of stock prices has probability 0.8 of increasing in any year. Moreover, the change in the index in any given year is not influenced by whether it rose or fell in earlier years. Let X be the number of years among the next five years in which the index rises.
(a) X has a binomial distribution. What are n and p? n = 1 p = 2
(b) What are the possible values that X can take? (Enter your answers as a comma-separated list.)
0,1,2,3,4,5
(c) Find the probability of each value of X. Draw a probability histogram for the distribution of X. (Enter your values for X from smallest to largest. Round your answers for the probabilities to four decimal places.)
X Probability 4 5 6 7 8 9 10 11 12 13 14 15
(d) What are the mean and standard deviation of this distribution? Mark the location of the mean on your histogram. (Round your answers to three decimal places.) mean 16 years standard deviation 17 years
Causes of death In the United States in 2007, there were 631,636 deaths from heart disease, 559,888 from cancer, and 137,119 from stroke.
A new low-calorie pizza introduced by Pizza Hut has an average of 150 calories per slice. If this number is based on a random sample of 100 slices, and the population standard deviation is 30 calories, give a 90% confidence interval for the popula..
Question: Regression and its analysis for given problem, do correlation/coefficient and its analysis
A local health care company wants to estimate the mean weekly elder day care cost. A sample of 10 facilities shows a mean of $250 per week with a standard deviation of $25. What is the 90 percent confidence interval for the population mean?
a survey found that womens heights are normally distributed with a mean 63.4 in and a standard deviation 2.5 in. a
Click it or else From police records, it has been determined that 15% of drivers stopped for routine license checks are not wearing seat belts.
To strengthen your understanding of structure and electrical activity (movement of ions) of the neuron, please create a FUNCTIONING model of the neuron
the amounts of soft drink machine is designed to dispense for each drink are normally distributed with a mean of 11.7
Girls' cross-country times: a contrast (optional). Continue your analysis of the data from the previous problem by comparing average race time during the first half of the season with the average for the second half.
An analyst wishes to include number of older siblings in family as a predictor variable in a regression analysis of factors affecting maturation in eighth graders. The number of older siblings in the sample observations ranges from 0 to 4.
In a study of several Chesapeake Bay tributaries, a random sample of nontidal freshwater locations on the Patuxent River was obtained.
Why did the famous Lost Colony of Roanoke fail? Read about Roanoke in the text and research the theories about its demise then explain which theory you consider most plausible.
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