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70% of all interns give up their jobs in their first 2 weeks of employment. A group hires 6 interns, which can be viewed as a random sample.
Do the null hypotheses differ between a regression versus at t-test analysis;if so, how? If not, why : could u explain using some example for both cases.
A batch of 20 employed automobile alternators contains four defectives. If three alternators are sampled at random, find out the probability of the event.
In how many of the pairs will 0 or 1 person not be capable to do the work? If two persons are selected in a random manner, what is the probability that neither will be capable to do the job?
Of 20 rats in a cage, 12 are males and 9 are infected with a virus that causes hemorrhagic fever. Of the 12 male rats, 7 are infected with the virus. One rat is randomly choosen from the cage.
In a shipment of 12 room air conditioners, there are 3 with defective thermostats. Three air conditioners will be selected at random and inspected one after another. Find the probability that:
Given: P(A)=0.25, P(B)=0.50, P(AB)=0.12P(ABc) = 0.13, P(AcB)=0.38, P(AcBc)=0.37. Express the following events in set notation and find their probablities.
Does your graph reflect growth or decay? Whether you claim growth or decay, briefly discuss what it (growth or decay) means as it relates to the given scenario.
Two Sun City had a population of 15,000 in 1985. It was then that Two Sun's population growth began to rise at a rate of 600 people every year. Based on this model, respond to the following: Write
In the sample of 23 young adult men, the correlation between the total hemoglobin (THb) measured from the venipuncture and measured from the finger needle puncture was 0.82. For a sample of 32 women
According to the report by the Commerce Department in 2004, 20% od U.S. households had some kind of high-speed internet connection. Assume 20 U.S. household are selected at random and number of hou
Given that n = 30, S2Y|X = 9, and SSY = 356, fill out the following analysis of variance table for a regression
1. Assume that the total cholesterol level of American women between the ages of 18-30 has a known mean of 175 mg/dl. A group of female Asian immigrants (n = 36) has a calculated mean of 165, and an
Suppose X is a Poisson random variable with parameter lambda. Find the mean and variance of |x-1|
Of the 72 senior starting players in a certain conference, what is the probability that 3 or more will receive pro contracts? Recalculate the answer using an appropriate approximate method.
The mean weight of loads of the rock is 50.0 tons with the standard deviation of 12.0 tons. If 16 loads are selected at random for the weight check, find out the probability that the mean weight of
A certain descrete random variable has probablity generating function function πx(q) = (1/3) (2 +q)/(2-q) compare p(x) for x 0, 1, 2, 3, 4, 5 (formula for summing a geometric series helps). Find
Find out the probability that the average of those counts is more than 104.8 mosquitos per square meter. Suppose that the variable is normally distributed.
Determine the cumulative for each class. Determine the cumalative percents for each class by dividing each cumative frequency by 200 and multiplying by 100%.
An urn contains one black and n-1 white balls. Balls are drawn at the random till the black ball is selected. Find out the probability that exactly k white balls will be drawn before the black one i
Compared to blending and product mix problems, transportation problems are unique because
When systematically formulating a linear program, the first step is
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles and a standard deviation of 7,000 miles. What is the probability of having a
In portfolio problem, X1, X2, and X3 represent the number of shares bought of stocks 1, 2, an 3 which have selling prices of $15, $47.25, and $110, respectively. The investor has up to $50,000 to in
To produce the regular case needs 2 minutes and 5 gallons of syrup, while a diet case needs four minutes and 3 gallons of syrup. Profits for regular soft drink are $3.00 per case and profits for die