Three experiments investigating the relation between need for cognitive closure and persuasion were performed. Part of the study involved administering a "need for closure scale" to a group of students enrolled in an introductory psychology course. The "need for closure scale" has scores ranging from 101 to 201. For the 83 students in the highest quartile of the distribution, the mean score was x = 176.10. Assume a population standard deviation of σ = 7.61. These students were all classified as high on their need for closure. Assume that the 83 students represent a random sample of all students who are classified as high on their need for closure. Find a 95% confidence interval for the population mean score μ on the "need for closure scale" for all students with a high need for closure. (Round your answers to two decimal places.)

Explain how you see the relationship between the three elementary row operations performed on an augmented matrix and the operations that lead to equivalent systems of equations. What advantages do you see in converting a system of equations to an equivalent augmented matrix? Research a particular application of matrices explaining how a matrix is used. Based on what you have selected think about the three operations of addition, scalar multiplication, and matrix multiplication. Can you describe what the results actually mean? Note that in some applications some of these operations may not have meaning. If that is the case, explain why.

Construct a data set of 15 whole numbers between 5 and 20. Separate them into three equal groups (treatment conditions) twice, once where the resulting F ratio would be significant and once where the resulting F ratio would not be significant. Try to keep the within group variance as similar as possible across all SIX groups

1-What are the three major differences between a normal distribution and a binomial
distribution?

2- Why is the Normal Distribution called "Normal"?

3- What are examples of exponentially distributed random variables in real life?

1-What are the three major differences between a normal distribution and a binomial
distribution?

2- Why is the Normal Distribution called "Normal"?

3- What are examples of exponentially distributed random variables in real life?

Explain the distinction between correlation and causation in policy analysis. Give three examples related to policy that can be found on normal day bases (such as newspaper). please use the concept of common response and confounding factors while discussing. Be concreate and use statistic approach. It can be anywhere between half a page to page.

Three experiments investigating the relation between need for cognitive closure and persuasion were performed. Part of the study involved administering a "need for closure scale" to a group of students enrolled in an introductory psychology course. The "need for closure scale" has scores ranging from 101 to 201. For the 73 students in the highest quartile of the distribution, the mean score was x = 176.90. Assume a population standard deviation of σ = 7.65. These students were all classified as high on their need for closure. Assume that the 73 students represent a random sample of all students who are classified as high on their need for closure. Find a 95% confidence interval for the population mean score μ on the "need for closure scale" for all students with a high need for closure. (Round your answers to two decimal places.)

PLEASE USE FACTORS IF POSSIBLE

An electric switch manufacturing company is trying to decide between three different assembly methods. Method A has an estimated first cost of $40,000, an annual operating cost (AOC) of $9000, and a service life of 2 years. Method B will cost $80,000 to buy and will have an AOC of $6000 over its 4-year service life. Method C costs $130,000 initially with an AOC of $4000 over its 8-year life. Methods A and B will have no salvage value, but Method C will have equipment worth 10% of its first cost. Perform both (a) future worth, and (b) present worth analyses to select the method at i = 10% per year.

Explain, in your own words, the difference between the three paradigms: human needs, interactive, and unitary process. Which of these best fits your philosophy of nursing?

QUESTION 2

1. 1. A marketing researcher has to choose between three car models that consumers will want to purchase. He had 120 men and 80 women decide which of the three designs were their favorite. The results are below.

   	Car Model 1	Car Model 2	Car Model 3	Row Totals
   Men	52	28	40	120
   Women	24	26	30	80
   Column Totals	76	54	70	n = 200

   1. Assuming, a null hypothesis, how many of the women would be expected to prefer Car Model 3 and how did you come up with that number?
   2. Do the data indicate that the distribution of preference of men is significantly different from the distribution of women? Use α = 0.05 (include expected values, df, critical value, and chi-square statistic)
   3. Write out the results for part b in APA format.
   4. Name three reasons why a researcher chooses to use a nonparametric test?
   5. What is the general goal for the goodness of-fit-test compared to the general goal of the chi-square test for independence?
   6. If the above problem only looked at the men (see below), assuming a no-preference null hypothesis, how many men would be expected to prefer Car Model 2 and how did you come up with that number?

   	Car Model 1	Car Model 2	Car Model 3
   Men	52	28	40