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To find the appropriate sampling design for the given study1. Such things as historical documents, newspaper reports, TV and radio broadcasts, when used in research, representsa) Unscientific methodsb) Case-study methodsc) Archival methodsd) Unreliable sources2. Jane Goodall observed chimpanzees fighting and killing each other. Which of the following methodologies would be most useful in telling us what caused the chimpanzee's behavior?a) Case-studyb) Naturalistic researchc) Quasi-experimental researchd) Higher constraint research
We want to estimate the population mean within 5, with a 99% confidence level. The population std dev is estimated to be 15. How large is the required sample size?
Describe and analyze your quantitative data and Briefly address the data analysis process.
One state lottery has 1000 prizes of $1, 200 prizes of $5, 50 prizes of $25, 15 prizes of $150, 4 prizes of $500, and 1 prize of $2500. What is the lottery expected profit per ticket?
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
For the 20 test scores shown, find the percentile rank for a score of 86.
Compute the variance and standard deviation
Statewide real estate sales agency, Farm Associates, specializes in selling farm property in state of Nebraska. At.10 significance level, has there been an increase in selling time?
To determine whether there exists mean difference among the groups:
Compute β-error of test in part (a) if true difference in mean burning rate is 2.5 centimeters per second.
What is the arithmetic mean selling price?
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
When the p-value is used for hypothesis testing, the null hypothesis is rejected if
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