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Suppose you are tasked to develop a section of the survey measuring "home mortgage debt" in which survey respondents are asked questions about whether they have a home mortgage and, if so, various details regarding their mortgage.
a. Construct four questions, each question reflecting one of the four corresponding levels of measurement, that a mortgagor (borrower) would answer relevant to their home mortgage.
b. Furthermore, for each question constructed, indicate the appropriate univariate statistic appropriate to the level of measurement. Explain your answer well.
At the .01 significance level, can the manufacturer conclude that the price reduction resulted in an increase in sales?
Find out the test statistic P-value, and critical value, and state the final conclusion. The mean IQ score of statistic professors is less than 120. Sample data: n = 46. Suppose that = 17, and the significance level is = 0.05.
Suppose ages for first marriages have normal distribution with standard deviation of four years. Determine the probability that the person getting married for first time is younger than 23 years of age?
Test whether there is any change in IQ after the training program. (The absolute value of t for 4 degrees of freedom at 1% level for one-tailed and two tailed tests are 3.747 and 4.604 respectively.
In the study of 15 taxi drivers, average experience was 11.2 years. Standard deviation was 2. At α = .10, is number of years' experience of taxi drivers really less than taxi company claimed?
Make a decision – For the purpose of this discussion, you will make a conclusion based on the hypothetical results from Step 4. Be sure to include a recommendation on the effectiveness of the new drug based on the results.
Further support that 51.3% of births are male. What is the probability that a randomly chosen child will be affected by the disease.
The mean weight of loads of coal placed in train cars by a loading machine is 43.0 tons with a standard deviation of 8.0 tons. Assuming that the weight of loads placed in the train cars by this loader are normally distributed
Suppose that 40% of cars in your area are manufactured in the United States, 30% in Japan, 10% in Germany, and 20% in other countries. If you randomly select 6 cars, what is the probability that two of them are Japanese?
11.9% reported they were in fair or poor health, including 10.5% of the married people, 19.6% of widows, 16.7% of divorced or separated, 12.5% of those never married, and 14% of those living with an unmarried partner.
Approximately 14 percent of the population of Arizona is 65 years or older. A random sample of five persons from this population is taken. The probability that less than 2 of the 5 are 65 years or older is:
Mention all samples of size 3, and compute the mean of each sample. Compute the mean of the distribution of sample means and the population mean.
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