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
soldi70 [24.7K]
3 years ago
14

Julie knows that the adult population gets, on average, eight hours of sleep each night. A hypothesis test can help her see if c

ollege students are different from the adult population. Julie tabulated that her sample of 101 students got an average of 7.1 hours of sleep each night, with a standard deviation of 2.48. Using the data provided and the formula below, what is the t-statistic that Julie calculates
Mathematics
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

-3.64

Step-by-step explanation:

You might be interested in
A certain​ country's postal service currently uses 55​-digit zip codes in most areas. how many zip codes are possible if there a
VashaNatasha [74]
There would be 100,000 if there are no restrictions on the digits and 90,000 if they cannot use 0 as the first digit.

If there are no restrictions, there are 10 possibilities for each digit:
10(10)(10)(10)(10) = 100,000

If the first digit cannot be 0, there are 9 possibilities for it and 10 possibilities for each of the other 4:
9(10)(10)(10)(10) = 90,000
8 0
3 years ago
Math 8 Review:Question 9
forsale [732]

Answer:

$5 per hour

Step-by-step explanation:

Just divide the amount that he earns by the price.

25/5=5

50/10=5

Brett is making $5 an hour.

5 0
3 years ago
What is the x intercepts of the mid point f(x)=(x-2)(x-4)
BigorU [14]
F(x)= -2x+6 i think so
6 0
4 years ago
Find m S<br> 12x +4<br> G<br> 40°<br> F<br> E<br> D<br> 4x
NISA [10]

Answer: C

Step-by-step explanation:

8 0
2 years ago
7(5x - 13) = 14
vfiekz [6]

Answer:

Part A, one solution

Part B, x=3

Step-by-step explanation:

divide both sides of the equation by 7 (5x-13=2)

move the constant to the right hand side and change its sign (5x=2+13)

add numbers (5x=15)

divide both sides of the equation by 5  (x=3)

hope this helps, have a good day

5 0
3 years ago
Other questions:
  • Factor completely 9ab + 12ax − 6b − 8x.
    13·1 answer
  • 31.24 to 1 decimal place
    8·1 answer
  • Macy’s sells 4 TVs for $680. How much would 7 TVs cost?
    8·2 answers
  • Barry orders a wallet for $12.99, a sweater for $20.99, and a watch for $66.49 from a mail-order catalog. He adds $12.06 for tax
    5·1 answer
  • Ohms's law of electricity states that V=IR, where V is voltage, I the current, and R represents the resistance.
    14·1 answer
  • I WILL PICK THE BRAINLIEST FOR WHOEVER HAS THE CORRECT ANSWER!
    15·1 answer
  • What is the value for X, Y, and Z?
    8·2 answers
  • (X-2)^2+8^2=x^2 how do U find the answer
    15·1 answer
  • A rectangular prism measures 8 inches in width, 12 inches in length, and 4 inches in height. What is the surface area of the pri
    15·1 answer
  • Ted can change an advertisement on a billboard in 5hr. Marie can do the same job in 2hr. How long would it take them if they wor
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!