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
timurjin [86]
3 years ago
11

Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take

both test and the results are give below Test A | 64 48 51 59 60 43 41 42 35 50 45 Test B | 91 68 80 92 91 67 65 67 56 78 71 (a) What is the value of the linear coefficient r (b) Assuming a 0.05 level of significance, what is the critical value
Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
6 0

Answer:

a) r = 0.974

b) Critical value = 0.602

Step-by-step explanation:

Given - Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both test and the results are give below

Test A | 64 48 51 59 60 43 41 42 35 50 45

Test B |  91 68 80 92 91 67 65 67 56 78 71

To find - (a) What is the value of the linear coefficient r ?

             (b) Assuming a 0.05 level of significance, what is the critical value ?

Proof -

A)

r = 0.974

B)

Critical Values for the Correlation Coefficient

n       alpha = .05          alpha = .01

4           0.95                       0.99

5           0.878                     0.959

6           0.811                       0.917

7           0.754                      0.875

8           0.707                      0.834

9           0.666                      0.798

10          0.632                      0.765

11           0.602                      0.735

12          0.576                       0.708

13          0.553                       0.684

14           0.532                       0.661

So,

Critical r = 0.602 for n = 11 and alpha = 0.05

You might be interested in
Given that BDFHJ ~ QSUWY, what is YQ?
Artyom0805 [142]
YQ/SQ = JB/DB
YQ/72 = 60/45
YQ = 72*(60/45) = 96

Selection D is appropriate.
5 0
3 years ago
Read 2 more answers
Mr. Johnson buys 5 bottles of lemonade for the school picnic. He buys four 28
Murljashka [212]

Answer:

180

Step-by-step explanation:

112+64

=112+64

=176

4 0
3 years ago
HELP PLEASE!! THIS IS DUE IN AN HOUR!!
Neko [114]

Answer:

Your answer is 30.

Step-by-step explanation:

You plug in b=12, and 5=h

12*5/2

60/2

--->30<---

7 0
3 years ago
Determine if the sequence is arithmetic 28,26,24,22,...
IRINA_888 [86]

Answer: yes it is

Step-by-step explanation:

Common difference -2

6 0
3 years ago
Read 2 more answers
1+[2x-3(1.8/0.2)] how to simplify
Mademuasel [1]
1.8=5/5+4/5=9/5

--------------

0.2=1/5

-------------------

1.8/0.2=(9/5)/(1/5)=(9/5)*(5/1)=9

-------------------

Therefore:

1+[2x-3(1.8/0.2)]

=1+[2x-3(9)]

=1+[2x-27]

=1+2x-27

=2x-26

=2(x-13)
7 0
3 years ago
Read 2 more answers
Other questions:
  • *Please help* Simplify 3x / 2
    7·1 answer
  • -5y + 8 = 3y + 10. Calculate and show work
    13·2 answers
  • Please Help!!!!!!!!!
    13·1 answer
  • Find the constant of variation k for the direct variation ​
    8·1 answer
  • Can someone help me please ASAP?
    9·1 answer
  • Help me pls<br><br> What is a visual Overlap
    13·1 answer
  • What is 88+8698? Multiplied by 56
    9·2 answers
  • Please help me! I don’t understand!!!!!!
    5·1 answer
  • E Fill in the char...
    10·1 answer
  • Describe how to find the average rate of change between x=3 and x=5 for the function f(x)= 3x^3+2
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!