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A manufacturer's quality conrol department is testing the number of steel beams that conform to national safety regulatons. Suppose that 1000 beams are tested, and each beam has a 0.1% chance of not conforming to regulations. Let the random variable X denote the number of steel beams that do not pass the safety test.
Suppose now that the equipment used to test the steal beams is faulty, and each beam has a 50% chance of failing the test. X can be approximated by which of the following(only answer one choice):
a) Poisson(500)
b) Binomial(1000,0.001)
C) Normal(1000,0.5)
D) Normal(500,250)
What is the equation of the regression model and what is the meaning of the coefficient of x?
Test the claim that the mean age of people in the United States who would say yes to the survey question shown in the table is 60 years or older.
Why does APA recommend that we calculate a measure of effect size in addition to calculating the test statistic?
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
Find the minimum sample size needed, using a prior study that found that 19% of computers needed repairs or had problems by the time the product was three years old.
The Restaurants McBurger says that the waiting time for customers is 3 minutes with a standard deviation of population 1 minute. The quality control department found in a sample of 50 clients that the average waiting time was 2.75 minutes.
suppose the newspaper states that the probability of rain today is 40. what is the complement of the event rain
the u.s. adult population by age is as follows the world almanac 2009. the data are in millions of people. age number
How would the results of this survey be used in the workplace? Briefly describe correlational research. Name a variable from this study and one from the workplace that might prove to provide a correlational relationship.
The average number of miles that 90 truckers drove in a day was 540.0 with a standard deviation of 40 miles. What is the 99% confidence interval of the true mean number of miles driven by all truckers?
As part of a study,investigators wanted to assess the accuracy of self reported smoking status. Participants are asked whether they currently smoke or not. In addition, laboratory tests are performed on hair samples to determine presence or absence o..
Conducts a study of 50 randomly selected seniors and finds the average debt is $2995, and the population standard deviation is $1100. With alpha = 0.05, is the student senate correct?
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