1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marissa [1.9K]
3 years ago
12

Concussions and Brain Size A recent study1 examined the relationship of football and concussions on hippocampus volume in the br

ain. The study included three groups with in each group: healthy controls who had never played football, football players with no history of concussions, and football players with a history of concussions. In this exercise, we test for evidence that average brain size is larger in football players who have never had a concussion (FBNoConcuss) than in football players with a history of concussions (FBConcuss). The data are in FootballBrain where the variable Hipp measures brain size as the volume of the hippocampus (in ml) for each subject. Let group be the football players with no concussion and group be the football players with a history of concussions.

Business
1 answer:
Gwar [14]3 years ago
5 0

Answer:

Part A: Null hypothesis. H₀: M₁ = M₂

Alternative hypothesis, H₁ : M₁ > M₂

Part B: x1-x2 = 6459-5735 = 724

Part C: p-value = 0.000

Part D: No, the difference in brain size is not due to random chance

Explanation:

See attached image

You might be interested in
on January 1, 2017, anodel, Inc. acquired a machine for 1,010,000. the estimated useful life of the asset is five years. residua
Licemer1 [7]

Answer:

Annual depreciation= $189,600

Explanation:

Giving the following information:

On January 1, 2017, anodel, Inc. acquired a machine for 1,010,000. the estimated useful life of the asset is five years. residual value at the end of five years is estimated to be 62000.

Annual depreciation= (original cost - salvage value)/estimated life (years)

Annual depreciation= (1,010,000 - 62,000)/5= $189,600

6 0
3 years ago
What is an interest rate usually shown as?
SCORPION-xisa [38]
Percentage, hope that helps
7 0
4 years ago
The following data were reported by a corporation: Authorized shares 24,000 Issued shares 19,000 Treasury shares 5,500 The numbe
Basile [38]

Answer:

13,500

Explanation:

Outstanding shares = issued shares - Treasury shares

19,000 - 5,500 = `13,500

Shares is a method through which firms raise capital.

Authorised shares are the maximum number of shares a company can issue to investors

Outstanding shares are the total number of shares sold to investors

Treasury shares are shares that have been issued and later repurchased by the company

Issued shares are the shares that a company issues

4 0
3 years ago
QS 7-13 Note receivable interest and maturity LO P4 On December 1, Daw Co. accepts a $36,000, 45-day, 10% note from a customer.
asambeis [7]

Answer and Explanation:

The journal entries are shown below:

1. Interest Receivable $300($36,000 ×  10% x 30 ÷ 360)  

         To Interest Revenue $300

(Being accrued interest revenue is recorded)

2. Cash $36,450

          To Interest Receivable A/c $300

          To Interest Revenue A/c $150 ($36,000 ×  10% x 15 ÷ 360)    

          To Notes Receivable A/c $36000

(Being note maturity date it is honoured is recorded)

6 0
3 years ago
Assume that aggregated fact table B is based on the detailed fact table A. Which of the following is FALSE
jeyben [28]

The false statement is E) Table B has more records than Table A

A detailed table is one in which a single record refers to a single fact while in the case of an aggregated table, a single record may refer to more than one fact. In the given case Table B is aggregated table that's why it is not possible that it has more records than table A.

A truth table shops quantitative facts for analysis and is regularly denormalized. A fact desk works with size tables. A reality desk holds the facts to be analyzed, and a measurement table shops facts about the methods in which the statistics in the fact table can be analyzed.

Tables are database items that incorporate all of the records in a database. In tables, records are logically prepared in a row-and-column format much like a spreadsheet. Every row represents a unique record, and every column represents a field inside the report.

Your question is incomplete. Please read below to find the complete question.

Assume that aggregate fact Table B is based on the detailed fact table A. Which of the following is false?

A) a number of dimensions that Table B is connected to are equal to or less than the number of dimensions that Table A is connected to.

B) a number of records in Table B are equal to or less than the number of records in Table A.

C) table B provides an aggregated view of facts in Table A.

D) all dimensions connected to Table B are connected to Table A.

E) table B has more records than Table A.

Learn more about tables here brainly.com/question/12151322

#SPJ4

7 0
2 years ago
Other questions:
  • What is an argument in favor of a $15 minimum wage
    13·1 answer
  • 1. A country’s national saving is 20% of its national income and it needs $4 worth of capital for producing $1 worth of goods an
    8·1 answer
  • What are the pros and cons of relocating a small or midsized manufacturing firm (that makes mature products) from the united sta
    11·1 answer
  • The Boat Works decided to go public by offering a total of 135,000 shares of common stock to the public. The company hired an un
    8·1 answer
  • Chief among the factors playing a part in determining an organization's structure are _______.
    8·1 answer
  • A manufacturing company applies factory overhead based on direct labor hours. At the beginning of the year, it estimated that fa
    9·1 answer
  • In the long run, fiscal policy influences a. saving, investment, and growth; in the short run, fiscal policy primarily influence
    6·1 answer
  • Consumer surplus is A. the difference between the highest price a consumer is willing to pay and the price the consumer actually
    5·1 answer
  • The top management of Wisniewski Automobile Parts Inc. has decided that the company's objective for the next two years will be t
    15·1 answer
  • Determine which of the items below would show up on a monthly bank statement. (Check all that apply.)
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!