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(A) Categorize the following as the example of nominal, ordinal, interval, or ratio level of measurement, and define why it represents this level: marital status of company's employees
(B) Find out if this data is qualitative or quantitative: Temperature
(C) In your own line of work, provide one example of discrete and one example of continuous random variable, and explain why each is continuous or discrete.
What is the mean of this uniform distribution? What is the standard deviation?
A journal polled its readers to determine the proportion of wives who, if given a second chance, would marry their husband again.
She then uses the mean and standard deviation of these values to estimate the mean value for all parts the operator is making. Construct a 95% confidence interval for the mean value assuming a normal distribution.
Using 5% level of significance, is there any difference in proportion of guests who would select the two resorts? What is your conclusion?
Based on the sample findings, estimate the true mean of Saturday sales with 90% probability.
What are the implications of statistical variation? Why are we interested in understanding and measuring variation?
The new study is going to use the confidence level of 90%. The estimator or appreciative must be in 1% of the population proportion. Which is the necessary size of the sample?
One day, you notice your 6' 2" roommate's size 12 shoes and comment, "I think height and foot size are correlated". You're somewhat surprised (and irked) by his response, "I think short people have big mouths."
A small business owner is experiencing a high staff turnover and wants to design a study to investigate the problem. What is the probability of randomly chosen student scoring at least 60?
To reduce operating costs, First UP Bank wants to make sure that the loan department in its branches manage the number of courier packages sent out to appraisers etc.
If the packets are sold in multi-packs containing six packets, what is the distribution of the number of prizes in a randomly chosen multi-pack?
At 5% level of significance, is true mean smaller than specification? Clearly mention your hypotheses and decision rule.
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