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What is the probability that you pick exactly 15 daisies in your bouquet? What is the probability that all of the flowers in your bouquet are daisies? What is the expected value and variance of D?
Determine if the following data set is a Population or a sample: the average electric bill for the 50 United States and the District of Columbia?
Create a 95% confidence interval for the percentage of all American adults who favor the death penalty. Show what the error for the confidence interval is also.
For a continuous random variable X, P(27 ? X ? 74) = 0.35 and P(X > 74) = 0.1. Calculate the following probabilities. How would I find P(X = 74) with the information given?
An American roulette wheel has 38 slots: 18 are red, 18 are black and 2 are green. Let R be the number of spins until you observe red. Let B be the number of spins until you observe black. Let G be
The wolf pack needs to kill 3 large animals in order to feed the whole pack. What is the probability that it will need to chase 20 large animals to feed the pack? What is the expected number of chas
Edward's hometown, Forks, Washington is usually very cloudy and rainy, but lately it has been very sunny with an 80% chance that it will be sunny each day for the foreseeable future. Assume that th
If an analysis of variance is used for the following data, what would be the effect of changing the value of SS1 to 50?
Given the values of the mean, variance, and standard deviation(or, arrow length) of the Xi's. Give the values of the mean, variance, and standard deviation of T.
Let K denote the number of fraudulent tax returns among the first 6 returns examined. Rename the rv K, name its distribution, and then evaluate algebraically the probability that K=4. Evaluate algeb
What is the difference between dependent and independent samples? Discuss differences is statistical treatment, statistical power, and data management.
Suppose x is a normally distributed random variable with mu = 13 and sigma = 2. Find each of the following probabilities (ALL inequalities are "or equal to"):
Compute the probability that exactly only 2 kids are sick Compute the probability that at least 2 kids are sick.
The distribution of the amount of money in savings accounts for Florida residents has an average of 2,200 dollars and a standard deviation of 900 dollars. Suppose that we take a random sample of 100
Suppose 13% of American adults believe that the highest priority of America is to protect freedom of speech. We will take a random sample of 200 American adults and ask them the question. Then the s
The distribution of the amount of money in savings accounts for University of Miami students has an average of 1,100 dollars and a standard deviation of 1000 dollars. Suppose that we take a random s
If the pH level of the reservoir is ok, the results at each location will have varying results, with an average pH of 8.5 and a standard deviation of 0.22. If the pH level of the reservoir is ok, wh
If np is greater than or equal to 15 and n(1-p) is greater than or equal to 15, what is the approximate shape of the sampling distribution of the sample proportion?
Twenty-nine percent of Americans say they are confident that passenger trips to the moon will occur in their lifetime. You randomly sample 200 Americans and ask if they believe passenger trips to th
Suppose 13% of American adults believe that the highest priority of America is to protect freedom of speech. We will take a random sample of 20 American adults and ask them the question. Then the sa
Suppose 60% of American adults believe Martha Stewart is guilty of obstruction of justice and fraud related to insider trading. We will take a random sample of 20 American adults and ask them the qu
If a set of observations contains an extreme value and none of the observations repeat themselves, the most representative measure of central tendacy is the