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kupik [55]
3 years ago
7

At a school carnival, three students spend an average of $10. Six other students spend an average of $4. What is the average amo

unt of money spent by all nine students?
Mathematics
1 answer:
user100 [1]3 years ago
6 0
$54 (if 10 for each of the 3 students and 4 dollars each of the 6 students) 
$14 if not
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Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take
Ipatiy [6.2K]

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

6 0
2 years ago
Puntuación de una Línea determinada?
taurus [48]

Answer:

score of a certain Line?

Step-by-step explanation:

If you wanted a translation, that's your answer!

5 0
3 years ago
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Sliva [168]
I believe 24 because that is the makimum and the biggest box
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3 years ago
The answer to the question
RoseWind [281]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
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storchak [24]
Steve = S , Tom = T
1) S+T = 7777
2) S= 1414 + 2T

put 2) in 1)

1414+2T + T = 7777
1414 +3T = 7777
3T = 6363
so T = 2121
then Steve sold 1414+2(2121) = 1414+4242=5656 tickets
while Tom sold 2121 tickets
5 0
3 years ago
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