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N people order a single donut from a shop at an average rate rate of 400 people per week. We also know that N is poisson distributed. Each person who orders a single donut, independent of each other, with probability 0.20.2, orders a vanilla dip donut with rainbow sprinkles. Obviously the best donut invented.
Let XX be the number of people that order vanilla dip donuts with rainbow sprinkles in a week.
Derive the PMF of XX.
Scores on a standardized exam are approximately normally distributed with mean score 540 and a standard deviation of 100. Find the probability that a test taker selected at random earns a score in the given range, using the normal distribution as ..
Determine estimated average starting salary for school with average GMAT of 600 points?
The sample mean is found to be 64.3, and the sample standard deviation, s, is found to be 5.6. Construct a 95% confidence interval for µ.
Explain the difference between observed frequency and expected frequency as it relates to Chi-Square test
A randomly selected resident turns out to be male (that is, it is given that the resident is male). Compute the probability that he is in favor of building the bridge.
Calculate the estimated standardized regression coeffcients using the output obtained here and the descriptive statistics output obtained above. Do your results agree with your previous results?
question let x denote the number of days with snowfall of at least 1 inch in a winter. during the past 121 winters
Write down a paragraph about the normal distribution. In the paragraph give an example of a distribution that you would judge to be nearly normal and explain why you have made that conclusion.
In a random sample of 26 people, the mean number of books they had read in the past year was 14.93 books and the standard deviation was 16.60 books.
Since over 10,000 students in his state took the Math SAT, he can show that the P-value for testing whether the mean score in his state is more than the national average of 480 is less than 0.0001. What we can conclude from this?
The Nielsen Company compiled a list of the top 25 advertisers in African American media. Shown below are a Minitab descriptive statistics analysis.
Let X1,..., Xn be a random sample from a two-parameter exponential population with density 1 f (x, θ, υ) = θ e-(x-υ) θ , for x ≥ υ, θ > 0. Find MLEs for θ and υ when both are unknown.
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