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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.
How much net revenue does the state expect, on average from each ticket? What is the risk preference of people who play this lottery?
Formulate an 84% interval estimate for the true proportion of employees within one year of retirement in the entire corporation.
They are asked if they use a laptop in class to take notes. Suppose that based on the survey, 220 of the 400 students responded "yes". a) What is the value of the sample proportion ^p ? b) What is the standard error of the sample proportion?
What is the difference between McNemar's Test and the chi-square test for 2X2 tables? When do we use each test?What is a discordant pair and concordant pair? Also, which type of pair is used in the McNemar's test?
Describe each set of data with a histogram (use the same class intervals on both histograms) the mean, standard deviation.
An aircraft manufacturer is attempting to determine if the average leg length of the adult male has changed from 44". A sample of 81 men was selected randomly
q1. consider the following time series.t 1 2 3 4 5 6 7yt 120 110 100 96 94 92 88a. construct a time series plot. what
Use the method of least squares to model the relationship between x and y.
Determine the sample size needed in order to be 99% confident that the sample proportion of the current customer accounts is within .03 of the true proportion of all current accounts for this company.
an accounting firm annually monitors a certain mailing services performance. one parameter of interest is the
the kamp family has twins rob and rachel. both rob and rachel graduated from college two years ago and each is now
Estimate the proportion of infants whose mothers experienced toxemia during pregnancy. Use 95% confidence level and doctors think that more than 20% of the infants their mothers experienced toxemia. Is that correct?
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