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Question: Garden. A company selling vegetable seeds in packets of 20 estimates that the mean number of seeds that will actually grow is 18, with a standard deviation of 1.2 seeds. You buy 5 different seed packets.
a) How many bad seeds do you expect to get?
b) What's the standard deviation?
c) What assumptions did you make about the seeds? Do you think that assumption is warranted? Explain.
Assuming that the sample was not skewed (i.e. it was normally distributed), about how many exam scores would you expect to fall between the range of 75 to 85?
You are given two boxes: one of them containing 900 red marbles and 100 blue marbles, the other one contains 500 red marbles and 500 blue marbles. If we pick one of the boxes randomly. and pick a marble what is the probability that it is blue? If we ..
Write the four parts for a two-sided hypothesis test concerning the population mean with a = 0.05.- What assumptions are necessary in order for the test in part (a) to be appropriate?
a deck of 52 cards is shuffled and a bridge hand of 13 cards is dealt out. let x and y denote respectively the number
Find a probability that a randomly chosen student owns atleast one of the above vehicles. What is the probability that a randomly chosen student does not own a bike.
Briefly identify and contrast the methods used by the psychoanalytic perspective, the humanistic perspective, and the trait perspective to assess personality.
The time to failure of a nickel-cadmium battery is Weibull-distributed with parameters v=0 α = 1/2 years and β = 1/4. Find the fraction of batteries that are expected to fail prior to 1.5 years.
The marketing department of a Firm located in Boardman forecasts that each of the following sales in ($000) is equally likely in a given week: $50, $100, $150, $200, $250, $300. What is the probability distribution of sales (X)?
A Poisson random variable has a PMF of the form- Find the characteristic function- Find the first three nonzero terms in the Taylor series expansion.
You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third?
We can think of this as the value of mew that maximizes f(y), the probability that our observed value of y occurs.
If this number was obtained based on a random sample of 8,000 electricity users, give a 95% confidence interval for the proportion of users of solar energy.
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