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In each part, identify whether the sample is a stratified random sample or a cluster sample.
a. A class of 200 students is seated in 10 rows of 20 students per row. Three students are randomly selected from every row.
b. An airline company randomly chooses one flight from a list of all international flights taking place that day. All passengers on that selected flight are asked to fill out a survey on meal satisfaction.
Identify the explanatory variable ant the response variable - can you conclude that there is a significant linear correlation between earnings per share and dividends per share?
What are the differences between a two sample t-test and ANOVA hypothesis testing? When would you use ANOVA at your place of employment, in your education, or in politics?
researchers tested whether the gender of hurricane name affects perceived risk amp evacuation intentions. 142
Can we conclude that the sequence of investment percentages is random? Use α= 0.05.- Is there clustering? Is there a trend? Use α = 0.05.- Can you conclude that the distribution of investment percentages is normal?
A multiple regression analysis between yearly income (Y in $1,000s), college grade point average (X1), age of the individuals (X2), Compute the coefficient of determination
Tuition of $1218 will be due when the spring term begins in 4 months. What amount should a student deposit today, at 4.55%, to have enough to pay the tuition?
a study considered the question are you a registered voter? accuracy of response was confirmed by a check of city
In a research project intended to gather data on the effects of type of study methods on examination performance, participants are randomly assigned to one of two conditions. In one condition they study alone, using notes they took during class le..
Calculate the coefficient of determination, given that the linear correlation coefficient, r, is -0.625. What does this tell you about the explained variation and the unexplained variation of the data about the regression line?
An Australian zoologist is interested in the physiological characteristics of three species of kangaroos. He randomly selects three sanctuaries from all sanctuaries in Australia.
You are required to submit the FINAL copy of this assignment, but you may first submit an optional DRAFT. This will allow you to receive qualitative feedback that can inform your revision. You should always avoidfocusing solely on the grader's DRA..
Visit a local business in your community. If it is not possible to visit, then choose a business you are familiar with. Identify the hazards within the occupancy and what type of fire protection system (FPS)would address the fire potential contain..
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