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At a large block party there are 40 men and 30 women. You want to ask opinions abouthow to improve the next party. You choose at random 4 ofthe men and separately choose at random 3 of the women tointerview.(a) What is the probability that any of the 40 men is in yourrandom sample of 4 men to be interviewed? What is the p robabilitythat any of the 30 women is in your random sample of3 women to be interviewed?(b) If you have done the calculations correctly in part (a),the probability of any person at the party being interviewedis the same. Why is your sample of 7 men and women not anSRS of people from the party?
What is the probability of selecting a family that has either a visa card or an american card? 2. if a family has a M/C, what is the probability that it has a visa cardd? 3. If a family has a visa card, what is the probability Have to show work in ex..
Do not include complex models which receive less support from the data than their simpler counterparts. How do we find the models to include in this subset?
Suppose that you select a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
Below is a normal plot of residuals from a regression. Does the plot indicate any problems with the assumption that the residuals are Normally distributed
a sample of nurses revealed their mean income to be 72000.00 for 9 months with a standard deviation of 3000.00 what
as brian is leaving for college his parents give him a car but warn him that they would take the car away if he gets 6
A multiple choice test with 50 questions is given. Each question has four choices. What is the student's probability of passing if passing is at least 60% correct?
the rent for a one-bedroom apartment in southern california follows the normal distribution with a mean of 2075 per
a bookshelf contains 20 textbooks for different subjects. among those 10 of them are used ones and 10 of them are brand
What is the probability that a randomly selected monthly cell phone bill is more than $100?
University officials at a major university would like to use three -term moving averages to examine enrollment. Enrollment data (in thousands of students) for the 12 most recent terms are shown in middle column of the table below.
If the population standard deviation is known to be 7.5 hours, can we conclude at the 5% significance level that he is right?
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