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
stepladder [879]
3 years ago
13

A math instructor claims that college women have more credit card debt than college men. She conducts a random sample of 38 coll

ege men and 32 college women, determines their average credit card debt, and obtains the following statistics:
women n1 =32 x1= 781 s1 = 1489 men n2 = 38 x2 = 435 s2 = 1026
Test the claim that college women have more credit card debt than college men at the a = .05 level of significance. Assume unequal variances.
Mathematics
1 answer:
kogti [31]3 years ago
8 0

Answer:

There is no significant evidence to support the claim that college women have more credit card debt than college men

Step-by-step explanation:

Given :

women n1 =32 x1= 781 s1 = 1489 men n2 = 38 x2 = 435 s2 = 1026

H0 : μ1 = μ2

H0 : μ1 > μ2

Assume unequal variance :

The test statistic :

(x1 - x2) / √(s1²/n1) + (s2²/n2)

T= (781 - 435) / √(1489²/32) + (1026²/38)

T = 346 / 311.42740

Test statistic = 1.111

Degree of freedom, df

(s1²/n1+s2²/n2)²÷1/(n1-1)*(s1²/n1)²+1/(n2-1)*(s2²/n2)²

The Pvalue :

(s1²/n1+s2²/n2)² = ((1489²/32) + (1026²/38))² = 9406484230.6884765625

1/(n1-1)*(s1²/n1)²+1/(n2-1)*(s2²/n2)²:

1/31(1489^2/32)^2 + 1/37(1026^2/38)^2 = 1.755926E8

df = 9406484230.6884765625 / 1.755926E8 = 53.569

df = 54

The Pvalue, from t score ;

Pvalue(1.111, 54) = 0.136

Pvalue > α ; Hence, we fail to reject the null ; There is no significant evidence to support the claim that college women have more credit card debt than college men

You might be interested in
The average age of 6 men is 35 years and
PSYCHO15rus [73]

Answer:

39.50

42.50

Step-by-step explanation:

Age of the 2 men = sum of the ages of the 6 men - sum of the ages of the 4 men

Average = sum of ages / total number of men

35 = sum of ages / 6

sum of ages = 35 x6 = 210

32 = sum of ages / 4

32 x 4 = sum of ages

128

210 - 128 = 82

age of the younger man = x

age of the older man = 3 + x

x + 3 + x = 82

2x + 3 = 82

2x = 82 - 3

2x = 79

x = 79/2 = 39.5

older man = 39.5 + 3 = 42.50

7 0
3 years ago
Wendell paid $12.85 for sunglasses and $2.75 for chips and a drink. How much did Wendell spend?
erma4kov [3.2K]
15.6 dollars s how much money Wendell spent

4 0
3 years ago
Read 2 more answers
Please help asap! <br> Solve for X.
charle [14.2K]

Answer:

I believe it's 12

Step-by-step explanation:

I hope this helps

8 0
3 years ago
Francisco is making an effort to drink more water, and has set a goal of 222 liters per day. He wants to know the volume of the
OlgaM077 [116]

V = 1,005.7 rounded off to one decimal place

Because:

Volume of a cylinder = πr²h

V = 22/7 x 4 x 4 x 20

V = 1,005.7

3 0
3 years ago
Sophia walked 6 miles in 90 min at Bear Creek Park in Euless, Texas. If she continues at this rate how many miles could walk in
otez555 [7]

Answer:

First you should determine in how many minutes she walks just one mile. For this, you just divide 90:6 and you get 1 mile in 15 minutes. After this, you just divide 60:15 and so you get 4 miles.


7 0
3 years ago
Read 2 more answers
Other questions:
  • 2. Tomás compró una bicicleta en $199.900. Primero, canceló la mitad y el resto en 7 cuotas de igual valor, con un interés total
    10·1 answer
  • A bag contains 3 red marbles, 2 blue marbles, and 5 green marbles. What is the probability of randomly selecting a blue marble,
    12·1 answer
  • A bee flies 25 m north of the hive then 10 m east 5 m west and 10 m south. How far north and east of the hive is it now? Explain
    11·1 answer
  • Determine the volume of the shaded region.
    6·1 answer
  • Solve the inequality,<br> p+ 1 = 2<br> The solution is
    10·2 answers
  • (3.9 x 10^20)(2.3x10^60) please explain will give Brainliest answer
    14·1 answer
  • |x-8|&lt;13<br> What is the solution
    12·1 answer
  • Which choice below lists all of the square roots of the number 15?
    5·1 answer
  • If the diagonals of a quadrilateral divide each other proportionally then it is a​
    12·1 answer
  • Question 9p=3p + 18 ​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!