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30% of households say they would feel secure if they had $50,000 in savings. you randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings. find the probability that the number that say they would feel secure is:
a) exactly five
b)more than five
c)at most five.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Survey of 16 tax returns reports families with incomes between $75,000 and 100,000 have on average $8,562 in Standard Deductions with the standard deviation of $1,800.
Are the following statements a valid pair of null and alternative hypothesis?
Formulate a linear programming model for this problem.
Pretend you are in charge of a packaging equipment company that is filling boxes of cereal. From past experience we know the population's mean weight of the filled boxes is 300 grams (and we know the distribution of grams is approximately normal).
Critically discuss the purpose of developing a frequency distribution? What is the relationship between the relative frequency and the cumulative frequency? Could a frequency distribution contain qualitative data? Why?
Determine following probabilities where Z follows standard Normal distribution?
Based on the information, what decision should the director make about the books used for the courses if the goal is to keep the cost below $300?
College students are a major target for advertisements for credit cards. At a university, 65% of students surveyed said they had opened a new credit card account within the past year. If that percentage is accurate, how many students would you exp..
Assuming no discrimination based on gender, what is the probability of getting 41 or fewer women when 100 new employees are hired?
What is the probability you pick a plum and Which of the following is a legitimate probability distribution for this situation
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
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