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A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer will spend between $20 and $35 at this store? Place your answer, rounded to 4 decimal places, in the blank. For example, 0.3456 would be a legitimate entry
The probability of an randomly selected person quits a team is 0.125. Assume the team has n members. Determine the smallest n that the team needs to have if the probability of the team has at least 20 members left is 0.9.
please answer this question using r code. the answer for this quesiton can be easily be found with a google search
a bag contains 4 balls among which k balls are red and the rest are green. assume that k has a prior distribution which
A sample of 60 night-shift workers showed that the mean number of units produced was 351. At the .05 significance level, is the number of units produced on the night shift larger?
What is the probability that more than 25% of the business travelers say that the reason for their most recent business trip was an internal company visit?
Using Non-parametric test, whether there is significant difference in the motor coordination skills.
Assume that stock is currently selling for $100. The change in the stock's price throughout the nest year follows a normal random variable with a mean of $10 and a standard deviation of $20.
Probability calculations reveal the following information. The probability of a favourable research report = 0.59. The probability of high sales given a favourable research report = 0.95. The probability of high sales given an unfavourable research r..
two-way anova between subjects anova is preformed when you havea. related samples in all cellsb. more than two level in
Multiple choice questions based on regression - multiple coefficient of determination
Construct a times series plot. What type of pattern exists in the data and use trial and error to find a value of the exponential smoothing coefficient α that results in a relatively small MSE
The samples do indicate that university A's students are younger than university B's; but is the difference significant at the 1% level?
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