In each of the following situations, is the alternative hypothesis one-tailed or two-tailed? What are the hypotheses?
a) A soda company recently reformulated their diet cola in an attempt to appeal to teenagers. They run a taste test to see if the new formula appeals to more teenagers than the standard formula.
b) A budget override in a small town requires a two-thirds majority to pass. A local newspaper conducts a poll to see if there's evidence it will pass.
c) One financial theory states that the stock market will go up or down with equal probability. A student collects data over several years to test the theory.
a) Is the part a alternative hypothesis one-tailed or
two-tailed?
A. Two-tailed
B. One-tailed
State the null and alternate hypotheses for the approval of the new formula. Fill in the correct symbols below.
H0: Approval New ___ (pick: <, >, =, ≠) Approval Old
HA: Approval New ___ (pick: <, >, =, ≠) Approval Old
b) Is the part b alternate hypothesis one-tailed or two-tailed?
A. One-tailed
B. Two-tailed
State the null and alternate hypotheses for the poll on the budget override. Fill in the correct symbols below.
H0: Voters for the budget ___ (pick: <, >, =, ≠) 2/3
HA: Voters for the budget ___ (pick: <, >, =, ≠) 2/3
c) Is the part c alternate hypothesis one-tailed or two-tailed?
A. One-tailed
B. Two-tailed
State the null and alternate hypotheses for the theory of fluctuations in the stock market. Fill in the correct symbols below.
H0: Pstocksgo up ___ (pick: <, >, =, ≠) Pstocks go down
HA: Pstocksgo up ___ (pick: <, >, =, ≠) Pstocks go down
In: Statistics and Probability
In: Operations Management
A survey of 600 high school students in our stat showed that 216 felt unsafe in their local school. Construct a 95% confidence interval for the proportion of students who felt unsafe.
In: Statistics and Probability
A survey of 700 high school students in our stat showed that 216 felt unsafe in their local school. Construct a 95% confidence interval for the proportion of students who felt unsafe.
In: Statistics and Probability
Explain why economic theory suggests that metropolitan areas with many school districts would be expected to have better educational outcomes than metropolitan areas with a single school district.
In: Economics
Suppose you want to determine the aggregate willingness to pay among students at your school or employees at your employer for increasing recycling at the school or workplace. How might you do this?
In: Economics
For some colleges, there are more applicants than there are openings. This requires colleges to implement a method for selecting students that utilizes criteria believed to predict how well a given student will perform in their college. For example, colleges will use a multiple regression equation that uses high school GPA, test score from the ACT or SAT (college entrance exams), and high school academic ranking (i.e., the quality of the high school) to predict how well a prospective student will do in their college. Describe at least 3 factors/variables you think colleges should use in selecting prospective students into their school. Your initial post must contain at least 10 sentences.
In: Advanced Math
What questions, comments to you have about the experiences (150-250 Words)
My experience regarding love and intimate relationships is based on how I was raised by my family and traditions of American culture. Growing up, I always saw the family unit as a man and woman who made a commitment to each other, set goals together and would eventually have a family. Generationally, things are different now compared to when I married my husband. Today we have people identifying more with heterosexual, homosexual, bisexual, lesbian, gay, and transgender as well as interracial and interethnic relationships and marriages. Many girls dream about marrying someday, however, many people today are holding off getting married or choosing not to marry at all. When my husband and I chose to get married, we wanted to spend the rest of our lives making each other happy, have a family, and grow old together. We have watched our three children grow into amazing young adults and will be celebrating 25 years of marriage on New Years Day.
In: Psychology
Children of a certain age in the nation have an average weight
of 85 with a standard deviation of 9.5 lb. A complaint is made that
children are improperly fed in a boarding school. As evidence, a
sample of 14 children of the given age is taken from the boarding
school with an average weight of 89.44 lb. What can be concluded
with an α of 0.05?
a) What is the appropriate test statistic?
-na
z test
one sample t test
independent sample t test
related samples t test
b)
Population:
weight, boarding shcool, children in the nation, feeding method, or
children from boarding school
Sample:
---Select---weight, boarding school, children in the nation,
feeding method, or children from the boarding school
c) Obtain/compute the appropriate values to make a
decision about H0.
(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)
critical value = ____; test statistic = __________
Decision: - Reject H0 or Fail to reject H0
d) If appropriate, compute the CI. If not
appropriate, input "na" for both spaces below.
[ ____,_________ ]
e) Compute the corresponding effect size(s) and
indicate magnitude(s).
If not appropriate, input and select "na" below.
d = ____; Select---na,trivial effect,small effect, medium
effect,large effect
r2 = ______; ---Select---na, trivial effect,
small effect, medium effect, large effect
f) Make an interpretation based on the
results.
a.The weight of children in the boarding school was significantly higher than the weight of children in the nation. The b.weight of children in the boarding school was significantly lower than the weight of children in the nation. The c.weight of children in the boarding school was not significantly different than the weight of children in the nation.
In: Statistics and Probability
A client, Todd Jones, has told you that he has heard that a Section 529 account could help him save for his daughter's education expenses. He is interested in saving not only for her college costs but also the costs of her attending a private high school. Todd is a New York State resident. Write a memorandum to your client explaining how Section 529 accounts work, including the Federal and New York State tax benefits of establishing and funding such an account. Also explain the changes made to Section 529 plans enacted by the Tax Cuts and Jobs Act of 2017.
The paper should be 1½ to 2 pages in length (typed, double space), plus an additional page containing a bibliography of articles/sources consulted in writing your paper.
In: Accounting