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You want to take a sample of DeBakey High School for Health Professions students to estimate the average duration in days of the most recent " love affair". Which sampling method do you think would work best: a Simple Random Sample, a Stratified Random sample with two strata (male/female), or a stratified random sample with four strata.
a) WHich sampling method from the choices listed above would be best? Describe how you would carry out your chosen sampling method of a student from part (a)
b) Describe 1 advantage of your chosen sampling method above.
Marentette and El-Masri (2011) used logistic regression to identify predictors of obtaining seasonal influenza vaccination among hospital-based nurses in Canada. Their results are shown in table 1:
An educational study utilizes a simple pre post design to assess the efficacy of a computer tutor for solving inequalities.
What is the probability of this actually happening?
Suppose the population standard deviation is a=25. (The a is actually the funny looking 0 with the line that goes from the top right up at an angle) Compute the standard error of the mean
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
The hypotheses tested by the one-way ANOVA F test - Evaluate the P-value of the ANOVA F test
Calculate a value of lambda using the data from last week concerning the news networks and the reporting practices. Compare your resulting lambda to the resulting chi-square from last week.
The cheetahs' coach believes that the Rockets' times are normally distributed as well. Construct a 95% confidence interval the Coach to compare the two teams' sprint units.
Data collected by a child development scientist produced a 95% confidence interval for the mean age, μ (in weeks) at which babies began to craw as [21.4, 31.6]
a) Explain why it would be hard to take a Simple Random Sample? b) Describe how to take a cluster sample of chocolate chip cookies.
1st a confidence interval is constructed without utilizing the finite population correction factor.
To find out whether the course is effective in increasing sales, the appropriate set of hypothesis for testing is:
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