The director of an alumni association for a small college wants to determine whether there is any type of relationship

between the amount of an alumnus's contribution (in dollars) and the years the alumnus has been out of school.

Use the Data Analysis toolpack: Correlation and Regression and answer the questions below.

Years Contribution

1 500

5 154

3 300

10 61

7 75

6 80

Give the following:

correlation coefficient:

is there a significant correlation between variables?

Equation of the Regression line

a

b

Predict the amount of contribution if the alumnus has been out of school for 4 years.

1. In a study of habits of undergraduate students, a researcher sampled 53 students and found that the mean number of classes missed over the course of a school year was 18. Assume the population standard deviation, σ = 5.7.
   1. (5 points) Calculate the 95% confidence interval for the mean number of classes missed during the school year by undergraduate students.

2. (2 points) If the researcher had sampled 75 students, would the margin of error be larger or smaller?

3. (2 points) If the researcher used a 90% confidence level instead of 95%, would the margin of error be larger or smaller?

An educator claims that the average salary of substitute teachers in school districts in Allegheny County, Pennsylvania, is less than $60 per day. A random sample of eight school districts is selected, and the daily salaries (in dollars) are shown $60   $56 $60   $55   $70 $55 $60   $55. Is there enough evidence to support the educators claim at =0.10?

Group of answer choices

A.P value=0.2765; fail to reject H₀

B.P value=0.2765; reject H₀

C.P value=0.3130; fail to reject H₀

D.P value=0.3130; reject H₀

Statement: Unionization was not the only alternative. Another alternative could be a meeting between a group of teachers (representative) and the department of education. There could be an ongoing discussion between the parties to resolve the issues. The problem with unionization is that the situation may come to a deadlock with the formation of union.

Thefirst statement is very interesting....if a group of teachers...selected by the total teacher group...met with say, the mayor...if there is one...and the city council, and the school board, to discuss the school problems........is that negotiations? Did the teachers squeeze the community into a de facto type of union situation without doing any further organization of the teachers into an union?

Unit 3 Journal Prompt

One of the ways that informal writing if often used is in communicating thoughts, concerns, ideas, and goals to others. In this Journal, imagine that a friend, family member, or personal acquaintance is thinking about returning to school to further his or her education or training.

Write either an email or letter to this friend, encouraging him or her to return to school. Use your own personal experience to motivate and show the friend how he or she can face the challenges that college might bring. Also offer suggestions related to time management and setting goals.

1. Given a two-tailed test with test statistic a = 1.62 and n = 0.10, find the the p-value and determine if we reject or fail to reject ho. Say why

2. In a recent survey of parents at Clairmont Elementary, 51 out of 75 parents supported including sign language as a part of the elementary school curriculum. In a survey of Minnesota elementary schools, it was published that 56% of parents support including sign language in elementary school curriculum. At a 5% level of significance, are Clairmont Elementary’s results the same as the state percentage? Conduct a seven-step hypothesis test.

Problem 3 (CLO 1, 2, 3, 4) A sample of elementary school children from Abu Dhabi participated for two years in a nutrition program organized by their school. At the end of the second year, the heights of the students were measured in meters as 1.01, .95, 1.03, 1.04, 0.97, 0.97, 0.99, 1.01, and 1.03. Assume the population of elementary school children heights is normally distributed with mean µ = 1.04, but ? unknown. 1) What is the mean (average) student height in the sample? 2) What is the variance of the student heights in the sample? 3) What is the standard deviation of the student heights in the sample? 4) Given that µ = 1.04, what is the probability of observing a sample mean height greater than or equal to the value of your computed sample mean in question (1) ? 5) What is the 99 percent confidence interval for the mean student height from question (1)? Give an interpretation for this interval? 6) What is the 95 percent confidence interval for this mean student height? Give an interpretation for this interval?

Jason is 11 years old and has Type 1 Diabetes. He was diagnosed with Diabetes when he was 5 years old. He is comfortable taking his "blood sugar" readings during the day. He likes to participate in sports and is on the soccer team, which practices three times a week after school. His mother always packs his lunch for school so he does not have to worry about eating the food in the cafeteria. For this written assignment plan a day's meal for Jason. Include breakfast, lunch, dinner, and snacks. In particular, include any snacks he may need after school to maintain a balanced diet during soccer practice. Also include a brief discussion about three issues/considerations regarding nutrition, diabetes, and children that nurses must be aware of. You may use any of the resources found in this module or any other evidence-based sources (include those as in-text citations and references using APA Editorial Format).

A large data set on Toledo workers was collected and the first three workers are characterized by:

For the entire data set the average age is 31, the standard deviation of the age is 5, the average hourly wage is $15, and the standard deviation of the hourly wage is $4.

16. What is the standardized Euclidean distance for Workers 1 and 3 based on Age and Hourly Wage?
    1. 0.371
    2. 1.166
    3. 1.923
    4. 0.942
    5. 1.543

17. What is the matching coefficient for Workers 1 and 3 based on Female, Union, and High School?
    1. 0
    2. 1
    3. 2/3
    4. 1/2
    5. 1/3

18. Refer to Exhibit 4-1. What is Jaccard’s coefficient for Workers 1 and 3 based on Female, Union, and High School?

1. 1/3
2. 1/2
3. 2/3
4. 1
5. 0