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An ornithologist studying the glaucous-winged gull on Puget Sound counts the number of agressive interactions per minute among a group of sea gulls during 9 consecutive minutes. The following scores resulted: 24, 9, 12, 15, 10, 13, 22, 20, 14.
Calculate
a. The mean number of aggressive interactions per minute
b. The median number of aggressive interactions per minute
c. The modal number of aggressive interactions per minute biological.
A random sample of 15 AAA batteries produced by this manufacturer lasted a mean of 9.8 hours with a standard deviation of 2.5hours. Find a 90% confidence interval for the population standard deviation of the lifetimes of AAA batteries produced by ..
take the pepsi challenge was a marketing campaign used recently by the pepsi cola company. coca-cola drinkers
a die is continuously rolled until the total sum of all rolls exceeds 250. what is the probability that at least 70
the boiling point of each of 16 samples of a certain brand of hydrogenated vegetable oil used in a fryer was determined
you have five employees with hourly wages listed with. the standard deviation of the population is 2.80.6 8 8 11 14a.
A sample of n = 9 individuals was selected from a normally distributed population with a mean of µ = 25 and a standard deviation σ = 6. A treatment was administered to the sample and, after treatment, the nine individuals produced the following sc..
What is the probability that a randomly selected monthly cell phone bill is more than $100?
If random samples, each with n = 9 scores, are selected from a normal population with µ = 80 and σ = 36, then what is the expected value for the distribution of sample means?
Compute the z-score for M = 89 for a sample of n = 25 scores. Is this sample mean in the middle 95% of the distribution?
Length of smoking time was recorded for each. Mean was =140 hours. Suppose = 8 hours. Determine 95% confidence interval for mean amount of time grocery-store ham is smoked.
Given the following waiting time distribution in a hotel, compute the expected value of the waiting time in 2 dec pl.
A teller can process an average of 100 customers per hour, which also can be modeled by a Poisson distribution. If there is one teller on duty, determine:
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