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
GalinKa [24]
3 years ago
5

We are again studying the times required to solve two elementary math problems. Suppose we ask four students to attempt both Pro

blem A and Problem B. Assume the students are independent and all results are normally distributed, but note that a particular student's times on the two questions are likely to be positively correlated. The results are presented below (in seconds).
student Problem A Problem B
1 20 35 2 30 40 2 3 15 20 4 40 50
Again find a two-sided 95% CI for the difference in the means of A and B.
Mathematics
1 answer:
KiRa [710]3 years ago
6 0

Answer:

(-16.494 ; -3.506)

Step-by-step explanation:

student Prob A Prob B difference, d (A-B)

1 20 35____ - 15

2 30 40 ___ - 10

3 15 20 ___ - 5

4 40 50 __ - 10

Difference, d = -15, -10, -5, -10

Xd = Σd/ n = - 40 / 4 = - 10

Standard deviation of d ; Sd = 4.082

The confidence interval for the difference is given as :

Xd ± Tcritical*(Sd/√n)

Tcritical at 95%; df = n - 1 ; 4 - 1 = 3

Tcritical(0.05, 3)). = 3.182

C.I = -10 ± 3.182(4.082/√4)

C.I = -10 ± 6.494462

C. I = (-16.494 ; -3.506)

You might be interested in
How does the mean absolute deviation (MAD) of the data in set 1 compare to the mean absolute deviation of the data in set 2? Set
pogonyaev

Answer:

Set 1: 4

Set 2: 9

The MAD of set 1 is 5 less than the MAD of set 2.

3 0
3 years ago
What is factoring? (idk...sssssoooooooo)
Flauer [41]

Answer:

Hope this will help:

Factoring is a financial transaction and a type of debtor finance in which a business sells its accounts receivable (i.e., invoices) to a third party (called a factor) at a discount. A business will sometimes factor its receivable assets to meet its present and immediate cash needs. Forfaiting is a factoring arrangement used in international trade finance by exporters who wish to sell their receivables to a forfeiter. Factoring is commonly referred to as accounts receivable factoring, invoice factoring, and sometimes accounts receivable financing. Accounts receivable financing is a term more accurately used to describe a form of asset based lending against accounts receivable. The Commercial Finance Association is the leading trade association of the asset-based lending and factoring industries.

Factoring is not the same as invoice discounting (which is called an assignment of accounts receivable in American accounting – as propagated by FASB within GAAP). Factoring is the sale of receivables, whereas invoice discounting ("assignment of accounts receivable" in American accounting) is a borrowing that involves the use of the accounts receivable assets as collateral for the loan. However, in some other markets, such as the UK, invoice discounting is considered to be a form of factoring, involving the "assignment of receivables", that is included in official factoring statistics.

7 0
3 years ago
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Mademuasel [1]

Answer:

wow bro thx for the points dawg appreciate it

Step-by-step explanation:

add me on ps4 faded4_twenty

6 0
2 years ago
Read 2 more answers
What is the answer and why is it correct explain
Colt1911 [192]
Top left is you answer
7 0
3 years ago
Pls help me I’ll give you 15 points
zaharov [31]

Answer:

number one is i thinks 10000000

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Leala took five tests in science. Find her average score to the nearest tenth:
    9·2 answers
  • What is the factors of 50 in ascending order??????
    15·2 answers
  • What is 9 to the -2 power
    7·1 answer
  • What are the solutions of the equation x2-30=x
    5·1 answer
  • Solve for x.<br> 5. 150 - (2x + 90) = 4x
    5·1 answer
  • If you vertically stretch the exponential function, f(x)=2^x, by a factor of 4, what is the equation of the new function?
    7·2 answers
  • Please help me with this very troubling algebra question, Thank you.
    8·1 answer
  • Can you please help me with this?
    14·1 answer
  • An education researcher is interested in comparing the learning outcomes of students who are taught a lesson using five differen
    13·1 answer
  • Using n to represent the cost of an item in dollars before tax and t to represent the amount of sales tax in dollars for that it
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!