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Warm-up Activity
Download G*Power and play around with it. See how changes in assumptions and parameters affect sample size estimates.Part 1
Part 2If you do a quantitative study for your dissertation, you must estimate the sample size you will need in order to have a reasonable chance of finding a relationship among the variables stated in your research hypotheses (should one exist), given your statistical analysis(es) and assumptions/calculations of factors 2-4 above. You must do this, even if you plan to use a convenience sample (see below). There are a number of sample size calculators available. Northcentral uses G*Power, which is required in this Activity. You will use G*Power's "a priori power analysis" function to calculate a sample size. If it yields an unrealistically large size sample, you will rethink your design and assumptions and, perhaps, use G*Power's "compromise power analysis" to estimate a workable sample size that makes sense. If you plan on using a convenience sample, you would use both analyses as part of your argument that your convenience sample is large enough.
A real estate agent wishes to determine the selling price of residences using the size (square feet), and whether the residence is a condominium or a single-family home. A sample of 20 residences was obtained with the following results: x 233 10 24 5..
You are proposed to accept or reject a lottery which gives X with probability 1/3 and -1 with probability 2/3. Before accepting you receive a signal "g" (good) or "b" (bad). The signal has precision q=P(g|win)=P(b|lose)>1/2.
Produce boxplots to compare the selection times for each participant. Comment on what they reveal. Also identify (by initial) which participant took the longest and which took the shortest time to make their decisions.
Your firm has 3 different lines that each produce the same type of widget
11) The time taken to assemble a car in a certain plant is a random variable having a normaldistribution of 20 hours and a standard deviation of 2 hours. What is the probability that a car canbe assembled at this plant in a period of time:a. l..
1 )The college student senate is sponsoring a spring break Caribbean cruise raffle. The proceeds are to be donated to the Samaritan Center for the Homeless. A local travel agency donated the cruise, valued at $2000. The students sold 2544 raffle tick..
Examine the skewness and kurtosis values for each dependent variable, examining the histograms and examine the Shapiro-Wilks' results and What is the outcome of the multivariate tests
Choo Choo Paper Company produces papers of various thicknesses. A random sample of 49 cuts had a mean thickness of 30.3 mils with a sample standard deviation of 4 mils. a) Develop a 99% confidence interval for the mean thickness of the population. b)..
Find a statistics study on Unemployment and explain the five-step process of the study.
Describes a positive linear relationship between X and Y
1. Discuss the following concepts and give examples from everyday life in which you might encounter each concept. Hint: For instance, consider the experiment of arriving for class. Some possible outcomes are not arriving (missing class), arriving on ..
4. A high school principal studied the amount of time her students devote to working at an after-school job. She randomly selected 15 students, obtained their working hours, and computed the sample mean to be 12.3 hours and the sample standard deviat..
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