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Question 1: A USA Today Snapshot states that the government claims that there is a significant difference in the mean credit card debts of households in New York and Texas. A sample of 250 households from each state gave these results: NY mean = $4446.25 with deviation = $845.70 while for TX the mean = $4567.24 with deviation = $561.95. At "alpha" = 0.10, is there a significant difference in debt? Part two: would your conclusion change if "alpha" were .05?
Question 2: The average AIMS test scores for two different teachers in Cochise County were 473 (8 students) and 459 (18 students.) The respective deviations were 39.7 and 24.5. Can it be concluded that the averages are different at Alpha = 0.10?
Question 3: Find the 90% confidence interval for problem #9 above.
At the 0.05 level of significance, is there sufficient reason to believe that the integers are not being generated uniformly?
In addition, the gender of the respondent is noted. After analyzing the results the following table of joint probabilities was produced: Find the probability that a customer who rates Windsor as excellent is a man. 0.45
Safe T cigarettes claim that their product has "low tar." Government standards are that this claim is invalid if there are more than 13.5mg tar per cigarette.
Using the Binomial Distribution, find the probability that if Air Northeast books 21 people on a flight, not enough seats will be available for all booked passengers.
Estimate a probability that a seed from new plant will germinate a random sample of 3000 seeds, of those seeds 2430 germinated. What is the sample space for this problem and does it add up tp 1? are the outcome in the sample space equally likely?
If a random sample of 10 people found that 9 were pro-life (i.e., 90%), while another random sample of 1,000 people from the same population found that 550 were pro-life (i.e., 55%), which would you find more significant?
Apply Scheduling Theory in order to optimize a schedule of events and reduce lost productivity
the number of items sold by freds candy store for 2004 and 2007 and the store prices for the two periods
The following data (in pounds), which were selected randomly from a normally distrubuted population of values, represent mearsurements of a machine part that is supposed to weigh, on average, 8.3 pounds.
In total, of 1000 applications they got from men, they hired 625, or 62.5%. Based on numbers presented, what do you believe of the discrimination claim?
Describing the results of a hypothesis test of two populations or more than two populations. Include the following: Perform the five-step hypothesis test on data pertaining to your selection.
Find out the range (R), variance (V) and standard deviation (s) for the given set of values:
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