A school psychologist believes that a popular new hypnosis technique increases depression. The psychologist collects a sample of 25 students and gives them the hypnosis once a week for two months. Afterwards the students fill out a depression inventory in which their average score was 53.88. Normal individuals in the population have a depression inventory average of 50 with a variance of 100.00. What can the psychologist conclude with α = 0.01?

a) What is the appropriate test statistic?
---Select--- na ,z-test ,One-Sample t-test ,Independent-Samples t-test ,Related-Samples t-test

b)
Population:
---Select--- students receiving hypnosis ,normal individuals, two months ,new hypnosis ,technique depression
Sample:
---Select--- students receiving hypnosis ,normal individuals ,two months, new hypnosis ,technique depression

c) Compute the appropriate test statistic(s) 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: ---Select--- 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 depression of students that underwent hypnosis is significantly higher than the population.

B.The depression of students that underwent hypnosis is significantly lower than the population.    

C.The depression of students that underwent hypnosis is not significantly different than the population.

Riverbed Inc., a manufacturer of steel school lockers, plans to purchase a new punch press for use in its manufacturing process. After contacting the appropriate vendors, the purchasing department received differing terms and options from each vendor. The Engineering Department has determined that each vendor’s punch press is substantially identical and each has a useful life of 20 years. In addition, Engineering has estimated that required year-end maintenance costs will be $940 per year for the first 5 years, $1,940 per year for the next 10 years, and $2,940 per year for the last 5 years. Following is each vendor’s sales package.

Vendor A: $53,000 cash at time of delivery and 10 year-end payments of $17,520 each. Vendor A offers all its customers the right to purchase at the time of sale a separate 20-year maintenance service contract, under which Vendor A will perform all year-end maintenance at a one-time initial cost of $10,000.

Vendor B: Forty semiannual payments of $8,980 each, with the first installment due upon delivery. Vendor B will perform all year-end maintenance for the next 20 years at no extra charge.

Vendor C: Full cash price of $164,000 will be due upon delivery.

Assuming that both Vendors A and B will be able to perform the required year-end maintenance, that Riverbed’s cost of funds is 10%, and the machine will be purchased on January 1, compute the following:

Click here to view factor tables

The present value of the cash flows for vendor A. (Round factor values to 5 decimal places, e.g. 1.25124 and final answer to 0 decimal places, e.g. 458,581.)

The present value of the cash flows for vendor B. (Round factor values to 5 decimal places, e.g. 1.25124 and final answer to 0 decimal places, e.g. 458,581.)

The present value of the cash flows for vendor C. (Round factor values to 5 decimal places, e.g. 1.25124 and final answer to 0 decimal places, e.g. 458,581.)

Bruce Ballard was a new lawyer fresh out of law school. He put an ad in a law journal seeking an opportunity with an experienced attorney so he could gain some trial court experience. Dawn Nagy responded to Bruce’s ad. Bruce referred three cases to Nagy’s office, drafted some documents, and conducted some depositions in Nagy’s cases. Ballard received some payments from Nagy but 5 years later, after the payments stopped, Ballard sued Nagy, alleging Nagy had proposed they work as partners in a law practice and share equally in the profits from the cases they worked on together. Ballard claimed they had an oral partnership agreement. Nagy alleged that since there was no evidence they shared earnings equally, that Ballard shared in law firm losses or expenses or that Ballard contributed capital, there was no evidence of a partnership. What should the court hold?

300 word minimum.

Complete the table below asking for a “snapshot” description of each of the four macroeconomic schools

A friend of mine does program evaluations for counseling centers that deal with juvenile delinquents. As such, he does many simple statistical analyses that compare some “pre-intervention” behavioral trait to that of the behavioral trait “post-intervention”. For example, say that some intervention is aimed at reducing aggression in adolescent boys. My friend might then quantify pre-intervention aggression (also known as “baseline” aggression) by administering something like The Aggression Scale developed by Orpinas and Frankowski (2001), which yields a value between 0 and 66, with greater numbers indicating higher aggression. Then, after the adolescent boys complete the intervention program, my friend would then again administer The Aggression Scale to determine the effects of the intervention program on aggression (i.e., “post-intervention”).

* State the alternative and null hypotheses (using the statistical notation for stating mathematical relationships) that represents the prediction that aggression will decrease from pre-intervention to post-intervention in these adolescent boys. * Calculate standard error of the mean difference and t_{obt.    *} Using an alpha of 0.05, what is t_crit? Would you reject or fail to reject the null hypothesis? Why? * What are the upper and lower boundaries of the range of mean differences that you can say with 95% confidence contains the mean difference represented by the above sample?

a) Peter is involved in a swimming competition. There are 8 boys swimming in the first race. He has to be able to get a first or second in the first race to be able to go to the next level of the competition. Assuming there are no equal places, what is the probability that Peter will get first or second place?

b) Peter’s team came first out of all the teams at the swimming competition. To celebrate the team goes out for pizza and ice cream afterwards. Peter’s team has 20 people: 8 people order pizza and 12 people order ice cream. 5 people on the team also ended up ordering both pizza and ice cream. What is the probability of a person on the team ordering pizza or ice cream, but not both?

The following data set shows the heights in inches for the boys in a class of 20 students. 66; 66; 67; 67; 68; 68; 68; 68; 68; 69; 69; 69; 70; 71; 72; 72; 72; 73; 73; 80
a/ Find the 5-number summary
b/Find the interquartile range IQR
c/ Are there any outliers? If there are list them
d/ Construct a box plot
Show Your Work

Are the concerns of those opposing Turkey’s admittance to the European Union well-founded? Can Islam, capitalism, and globalization co-exist? Please write personal perspective. Please type it up, because hand writing is sometimes hard to understand

Construct a 90% confidence interval of the mean birth weight of 195 boys with sample mean =32.7 hg , and standard deviation =6.6 hg.

Group of answer choices

a) 1.645<mean<1.777

b) 31.923<mean<33.477

c) 32%<mean<33%

d) 0.777<mean<1