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
jenyasd209 [6]
3 years ago
5

When testing μ, how do we decide whether to use the standard normal distribution or a Student's t distribution? If the x distrib

ution is normal and n ≥ 30 with known σ we use the Student's t. With the same conditions and unknown σ we use the standard normal. If the x distribution is normal and n ≥ 20 with known σ we use the standard normal. With the same conditions and unknown σ we use the Student's t. If the x distribution is normal and n ≥ 30 with known σ we use the standard normal. With the same conditions and unknown σ we use the Student's t. Whenever we assume the populations are independent, we always use the standard normal.
Mathematics
1 answer:
Helga [31]3 years ago
8 0

Answer:not sure

Step-by-step explanation:

You might be interested in
The area of a rectangle is represented with the expression (18x-12) inches squared. The width of the rectangle is 6 inches. Writ
Rudik [331]
Are equation for a rectangle is area = (width x length)

(18x - 12) = 6 x length
length = (18x - 12) / 6
length = 3x - 2
5 0
3 years ago
G(x)=3x+3<br> h(x)=-4x+<br> (g+h)(10)
lisabon 2012 [21]

Answer: (10x + 30)

Step-by-step explanation:

1. combine like terms. -4x + 3x = -x

2. you can’t have a negative x, so you would multiply the equation (-x+3) by -1, to get (x-3).

3. (x-3)(10)... 10 • x = 10x, 10 • 3 = 30.

4. put them together, answer would be 10x + 30.

4 0
3 years ago
What is the Z-score for Paula if she got 1400 on the SAT, the mean was 1100 and the standard deviation was 275? step by step how
Setler [38]

mu = 1100 = population mean

sigma = 275 = population standard deviation

x = 1400 = raw score

z = z score

z = (x-mu)/sigma

z = (1400-1100)/(275)

z = 300/275

z = 1.0909090909091 approximately

z = 1.09

Convention is to round to two decimal places so that you can use a Z table to look up the area under the curve (which helps determine probability).

The positive z score is due to Paula's raw score being above the mean.

7 0
2 years ago
Simplify (6 5x) (7x 3)
antiseptic1488 [7]
(6 + 5x)(7x + 3) = 42x + 18 + 35x^2 + 15x = 35x^2 + 57x + 18
3 0
3 years ago
Someone help me with this question please I’ll mark u as brilliant :))
SCORPION-xisa [38]

Answer:

3\sqrt{141}

Step-by-step explanation:

Use the Pythagorean Theorem.

37^{2}=x^{2}+10^{2}

1369=x^{2}+100

-100       -100

1269=x^{2}

\sqrt{1269}=\sqrt{x^{2} }

3\sqrt{141}=x

3 0
3 years ago
Other questions:
  • Describe a pattern in each sequence. What are the next two terms of each sequence? 2, 4, 8, 16, . . .. . A. add 2 to the previou
    9·1 answer
  • The point (x, 5/2) lies on the graph of y = x - 1/2. The value of x is
    9·1 answer
  • How are the partial products 2000 and 150 related to 2150
    5·2 answers
  • Melanie spent four hours babysitting. She charges $16 upfront and then an additional charge per hour. The total amount she earne
    10·1 answer
  • A Complete the information needed below.​
    14·1 answer
  • If you don't help me out you're not valid.​
    9·1 answer
  • PLEASE HELPPPPPP<br> 35 POINTS ILL GIVE BRAINLYEST
    15·2 answers
  • Is x = 5 a solution to the equation 19 - x = 14?
    12·2 answers
  • Alexa has $72 in spending money. She wants to buy matching shirts for her and her friends. The shirt she wants to buy costs $18
    9·1 answer
  • A scuba diver is 3 meters below sea level. If the diver descends another 8 meters, what is the scuba diver’s position?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!