The number of students in one of the small towns reached (2000) male and female students, who move to their schools by means, as in the following table:

Study the relationship between the type of pupils and the mode of transportation, and answer the following questions:

A - Formulate the appropriate null hypothesis.

B - Determine the value of the appropriate level of significance.

C - Set the degrees of freedom.

D - Calculate the value of a square of X2.

E - Extract the critical X² value from the table. And - test your zero hypothesis, and make the appropriate decision about it, and what does it mean?

Suppose X,Y,Z ⊆ U. If X is the set of all people who played hockey in high school, Y is the set of all out-of-state students, and Z is the set of all international students, describe the following sets in words:

(a) X′ ∪Y ∪Z   (b) X ∩ Y ′ ∩ Z′   (c) (X∩Y′)∪Z′

Consider the set A = {b, c, d}.

(a) How many subsets does A have? (b) List all subsets of A.

Suppose that a committee of 3 people is chosen from 10 people, including Daniel.

(a) How many total committees are there? (b) How many committees include Josh?

(c) Does it seem likely Josh will be chosen for the committee if it is done randomly? Explain.

Identify the dependent variable and the independent variable (or variables) and comment on the validity of the implied causal relationship:

1. A study that looks at students’ college GPAs and how they are affected by the students’ number of weekly study hours, high school GPA, and number of weekly hours of extra-curricular activities.

2. A young pitcher wants to understand how she can improve her pitches. She collects data on the number of strikes thrown in a pitched game, the average number of practice pitches per day in the week leading up to a game, the number of hours spent working with her coach the week before the game, and the time spent warming up right before the game.

3. A researcher proposes to study the effect of weight and height on a person’s body mass index (BMI).

A small company involved in​ e-commerce is interested in statistics concerning the use of​ e-mail. A poll found that 37% of a random sample of 1122 adults, who use a computer at their​ home, work, or​ school, said they do not send or receive​ e-mail. Complete parts a through e.

​a) Find the margin of error for this poll if we want 90​% confidence in our estimate of the percent of American adults who do not use​ e-mail.

b.) Explain what that margin of error means.

c.) If we want to be 90% confident will the margin of error be larger or smaller?

d.) Find that margin of error.

e.) In general if all other aspects of the situation remain the same: will smaller margins of error involve greater or less confidence in the interval?

Discussion 6

It should be 10-15 lines long. 2 paragraphs.

If education is a vital tool to bridge the wealth and opportunity gap between low and high income communities, why are schools struggling with resources? What should be done to better inform elected and government officials of the need to invest in schools? Do schools really need more funding or is there a mismanagement of resources? What can we do?

Swaby, Aliyya. (2018, March 16). Will Texas schools finance panel tell schools to do more with less? Some members think it's predetermined. The Texas Tribune. Retrieved from https://www.texastribune.org/2018/03/16/school-finance-efficiency/ (Links to an external site.)Links to an external site.

**Please do example** Compare your life with a sibling (or another family member – parent/cousin/niece if a sibling is not appropriate). How are you alike AND different in each of these areas (2 similarities and 2 differences) A. Physical appearance – height/weight/medical conditions/hair color, motor skills. B. Cognitive abilities – IQ, school preference, grades, language use, memory. C. Psychosocial skills – temperament, social skills, friendships. How can you explain these similarities and differences based key concepts (temperament, IQ, birth order, SES, heritability, gene-environment interactions, niche-picking, brain development, genetics) for each example and use a developmental approach (how these similarities and differences changed over time).

1. Beth wants to determine a 95 percent confidence interval for the true proportion of high school students in the area who attend their home basketball games. How large of a sample must she have to get a margin of error less than 0.02?

HINT: To find n, since no previous study has been done, use the value p = 0.5 for the proportion and one of the values (1.282, 1.645, 1.96, 2.576) for the critical value depending on the confidence level. Don't forget to round your value of n up.

2. An SRS of size 28 is drawn from a population that has a normal distribution. The sample has a mean of 118.5 and a standard deviation of 7.

Give the standard error of the mean:

Suppose you have decided to take up parachuting, and will land at a random point on a street (called F Avenue) between University X and University Y.

(a) You’ll be on time to class if you land closer to University X than to University Y. Find the probability that you are on time to class.

(b) What’s the probability that your distance to University X is more than three times your distance to University Y?

(c) You’ve managed to convince your two friends, who are also taking a class at 10:30, to start parachuting to school with you. If you operate independently, what’s the probability that exactly one of the three of you lands closer to University X than to University Y, and makes it to class on time?

1. A nurse says that her conscience clearly dictates that she should not assist at aparticular operation. One of the doctors present says that he went to a Catholic medical school and he would assure her that the operation is not immoral.Should the nurse follow her conscience or the advice of the doctor?

2. “Most moralists/ ethicists do not understand medical terminology and medical problems,” is the remark of health-care provider. “As long as I am not certain that anything I do is morally wrong, then I go ahead and do it.” Is the health- care professional acting correctly?

3. Statement: “All men do not agree on the so-called principles of natural law. This proves that they are not universal principles.” What is your reaction about this statement?

A survey conducted by a research team was to investigate how the education level, tenure in current employment, and age are related to annual income. The estimated multiple linear regression equation that can be used to predict the annual income given number of years school completed (Education), length of tenure in current employment, and age can be written as

ŷ =−143481.19+10011.92Education−2193.88Tenure+2689.24Age{"version":"1.1","math":"\hat y = -143481.19 + 10011.92 Education - 2193.88 Tenure + 2689.24 Age"}

The standard error on the education coefficient is 2570. We can say that

a. the coefficient on education is statistically significant at the one percent level

b. none of the above

c. as the length of tenure increases annual income rises

d. the coefficient on education is not statistically significant