STATISTICS

Sample Statistics and Population Parameters

Distribution of Sample Proportions

Question: Given sets E = {1,2,4,6} and O = {1,7,9} and the universal set U = {1,2,3,4,5,6,7,8,9}. Find E U O, a){1} b){2,4,6,7,9} c){1,2,4,6,7,9} d){4,6,7,9} Question: Given sets E = {1,2,4,6} and O = {1,7,9} and the universal set U = {1,2,3,4,5,6,7,8,9}. Find E'. a){1,7,9} b){2,4,6} c){1,2,3,4,5,6,7,8,9} d){3,5,7,8,9} Question: A manufacturing company produces digital cameras and claim that their production may be 3% defective. A video company, when purchasing a batc...

STAT 200 Week 6 Homework Problems Rubric Correct Answers with no work shown or partial work shown to justify the answer is graded at 50%. 1. Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,000 of them were female. In that same year, of the 211,693 students who took the calculus AB exam 102,598 of them were female ("AP exam scores," 2013). Estimate the difference in the proportion of female students ta...

What is a sample statistic, what is a population parameter, and what is the difference between them? What is a sample statistic? A. A sample statistic is a range of likely values that a population parameter could take. B. A sample statistic is a numerical value describing some attribute of a population. C. A sample statistic is a numerical value describing some attribute of a sample. This is the correct answer D. A sample statistic is a portion of the entities of interest that the research...

STAT 200 Week 6 Homework Problems 9.1.2 Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were female. In that same year, of the 211,693 students who took the calculus AB exam 102,598 of them were female ("AP exam scores," 2013). Estimate the difference in the proportion of female students taking the biology exam and female students taking the calculus AB exam using a 90% confidence level. n1...

Quiz 1 1. When a researcher uses a random sample of 400 to make conclusions about a larger population, this is an example of: 2. If a study is comparing number of falls by age, age is considered what type of variable? 3. Validity is: 4. Data is defined as: 5. The experimental or predictor variable is an example of: 6. Level of measurement that defines the relationship between things and assigns an order or ranking to each thing is known as: 7. A variable is considered: 8. External and internal i...

HLT 362 V GCU Quiz 1 1. When a researcher uses a random sample of 400 to make conclusions about a larger population, this is an example of: o Descriptive statistics o Demographics o Inferential statistics o Dependent variables 2. If a study is comparing number of falls by age, age is considered what type of variable? o Interval o Ordinal o Ratio o Nominal 3. Validity is: o A data item, such as characteristics, numbers, properties, or quantities, that can be measured or counted. ...

1. Mayland et al. (2014) do not provide the degrees of freedom ( df ) in their study. Use the degrees of freedom formulas provided at the beginning of this exercise to calculate the group df and the error df . The degrees of freedom are calculated by subtracting k, the number of groups in the study (which is 3) by the number N of participants. 255 – 3. df = 252. The error df is done by the formula k – 1, so 3 – 1 = 2. The error df is 2 2. What is the F value and p value for spiritual...

If a study is comparing number of falls by age, age is considered what type of variable? Interval Ordinal Ratio Nominal Validity is: A data item, such as characteristics, numbers, properties, or quantities, that can be measured or counted. The extent to which an idea or measurement is well-founded and an accurate representation of the real world. A measurement level with equal distances between the points and a zero-starting point. Raw unorganized information from which conclu...