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In your own words explain the difference between "descriptive statistics" and "inferential statistics." Do not just give definitions.# In your own words, define the four different sampling techniques.# Develop your own hypothesis about a situation of interest, for example: "Middle income families containing four members spend 10% of their gross income on clothing per year."# Select one of the four sampling techniques and give a detailed design of how you would gather sampling data to answer your hypothesis.# Select a second sampling technique for the same hypothesis and give a second detailed design of how you would gather sampling data.
A professor receives, on average, 24 emails from students the day before the midterm exam. To compute the probability of receiving at least 10 emails on the next day before the midterm she would use which probability distribution?
Testing for two Proportions - Is the difference between the averages statistically significant?
In a simple random sample of 30 days, what is the probability that the mean number of daily emergency admissions is between 75 and 95?
A manufacturing process produces items whose weights are basically distributed. It is known that 22.57% of all the items produced, weigh between 100 grams up to the mean and 49.18% weigh from the mean up to 190 grams.
Describe five data collection techniques in your own words. Be sure to cite any sources you used. Explain why the examination of collected data is so important.
An instructor in a Statistics course teaches in two classes: Class A and Class B. Class A has 16 students while class B has 25 students. On the same examination, although there was no significant difference in the mean grades, class A had a standa..
Develop a 95% confidence interval to estimate the difference in SAT math scores from students in Delaware and New jersey.
In your opinion does one do a better job or representing the proportion of the area under the standard curve?
At the end of the training program, the attitude of each trainee was measured on a 100-pt. scale (the lower the score, the poorer the attitude). How many treatments are in this experiment?
Suppose that a large corporation surveys all of their employees, and finds that 24% of them carry secondary health insurance. A representative from GoldStar Care visits 100 employees
The standard deviation of is usually called the A. randomized standard error B. standard error of the sample C. standard error of the population D. standard error of the mean
The amount in each can and find the average, the probability that the average of the six cans will be between 11.9 and 12.1 oz equals which standard normal probability?
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