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1. If X is a Binomial random variable with parameters n and p, show that Y = n?X is also a Binomial random variable. What are the parameters of Y?
and
2. If X is a Bernoulli random variable with parameter p, show that Y = 1 ? X is also a Bernoulli random variable. What is it's parameter?
What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)?
The city of Vancouver Office of Emergency Management reported that 911 operators receive an average of 7.2 calls per hour. Assume that the number of 911 calls follows Poisson distribution
a quality control test has five equally likely outcomes - a b c d and e.a what is the probability of c occurring?b what
Speaking to a group of analysts in January 2006, a brokerage firm executive claimed that at least 70% of investors are currently confident of meeting their investment objectives.
all work must be done independently.a retrospective sample of males in a heart-disease high-risk region of the western
Provide an example of two of the laws of exponents. Explain how to simplify them. Tell how do the laws work with rational exponents and then provide a third example to simplify that includes a rational (fractional) exponent.
The manager wants to know the probability that any particular cookie will have fewer than 5. What type of probability distribution will most likely be used to analyze the number of chocolate chips per cookie?
Use a 1% level of significance to test the claim that the distribution of first nonzero digits in the account file does not follow Benford's Law.
To demonstrate the effectiveness of the drug, a researcher selects a sample of n = 25 children diagnosed with the disorder and measure each child's attention span before and after taking the drug.
50 people are selected randomly from a certain population and it is found that 13 people in the sample are over 6
Cold Stone Creamery has recorded demand for the particular flavor of ice cream during first seven days of July. Results are as follows: Forecast the sales for 8th day of July using 5-day moving average.
State the hypotheses that will help us determine whether a change occurred in the mean length of a work week. At a = .05 can the null hypothesis be rejected? What is your conclusion?
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