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Question 1:
On his university application, Prashad must list his course choices in order of preference.
He must choose four of the six courses available in his major discipline and three of the four courses offered in related subjects.
In how many ways can Prashad list his course choices? Explain the reasoning for your answer.
Question 2:
During a recent survey of ethnic backgrounds of 1000 people in a large city, 513 were Canada, 148 were French 72 were African and 56 were Asian and the remainder were from other groups.Calculate the probability that a person, selected at random from the population has:
a Canadian background?an African background?an "other" background?
Question 3:
Use a tree diagram to explain why the probability that a family with four children has either all four children of the same gender is 1/8. Assume that the probability of having a girl is equal to the probability of having a boy.
create a path diagram for each research study that would represent the relationships hypothesized within it.assignment
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?
The proportion of the American population that has disease Z is p=0.02. If 60 people are randomly selected from the population, what is the probability that at least 1 of them has disease Z?
A researcher conducts an experiment comparing two treatment conditions and obtains data with 10 scores for each treatment condition.
a team of experts is examining the reliability of lie dector tests. to determine the probability that a lie detector
if a sample is subdivided into subsamples a minimal sample size of 30 is necessary for every subsample?a. trueb.
When testing two populations with small sample sizes, do both sample sizes have to be identical? Why or why not?
the average hourly wage of workers at a fast food restaurant is 6.50hr with a standard deviation of 0.45. assume that
a population proportion is to be estimated. estimate the minimum sample size needed to achieve the specified margin of
1. a bus starts with eight people 2 of which are jack and diana and stops at 12 locations. assuming nobody else gets on
Diagnosis tests of medical conditions have several results. The test result can be positive or negative, whether or not a patient has the condition.
The amount of food consumed by each rat with humidity set at 20% and again with humidity set at 60%. For this study, identify (a)the population and (b) the sample.
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