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
Fynjy0 [20]
3 years ago
5

Suppose x has a normal distribution with mean μ = 45 and standard deviation σ = 9. describe the distribution of x values for sam

ple size n = 4. (round σx to two decimal places.) μx = σx =
Mathematics
1 answer:
Fofino [41]3 years ago
4 0
The standard deviation of a particular sample is equal to the standard deviation divided by the square root of the sample size.  That is,\sigma_x=\frac{\sigma}{\sqrt n}
The mean of a particular sample is equal to the mean of the set the sample was taken from.  That is,
\mu_x=\mu
\text{In your case, }\sigma_x=\frac{9}{\sqrt4}=\frac92\text{ and }\mu_x=45.
You might be interested in
what is sum 18+57_<img src="https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%262%263%5C%5C4%265%266%5C%5C7%268%26
REY [17]

Answer:

18+57= 75

Step-by-step explanation:

Next time use a calculator chuckle nuts

7 0
3 years ago
Brennan made lemonade for the country fair.He has 12 containers of the same size to fill the first 3.How many gallons of lemonad
marissa [1.9K]
The remaining number is 20
3 0
3 years ago
3x + 4y = 12<br> x + 2y = 10
borishaifa [10]

Answer:

x=-8 and y=9

Step-by-step explanation:

rewrite the equations to x+2y=10,3x+4y=12

sub 2y from both sides x+2y-2y=10-2y

substitue x=10-2y in 3x +4y=12

3(-2y+10)+4y=12

distribute

add-30 to both sides

divide both sides by -2

y=9

sustitute 9 for y in -2y+10=x

x=-8

7 0
2 years ago
Two customers took out home equity loans. • Cathy took out a 10-year loan for $20,000 and paid 5.20% annual simple interest • St
ratelena [41]

Answer: B) $4,000

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the loan.

P represents the principal or amount taken as loan

R represents interest rate

T represents the duration of the loan in years.

Considering Cathy's loan,

P = $20,000

R = 5.2%

T = 10 years

I = (20000 × 5.2 × 10)/100

I = $10400

Considering Steven's loan,

P = $20,000

R = 4.8%

T = 15 years

I = (20000 × 4.8 × 15)/100

I = $14400

The difference between the amounts of interest Cathy and Steven paid for their loans is

14400 - 10400 = $4000

4 0
3 years ago
Read 2 more answers
Help me with this please!
zepelin [54]

Answer: -x - 3√x + 4

(1 - √x)(√x + 4)

= √x + 4 - √x.√x - 4√x

= -x - 3√x + 4

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • How to do .please teache me step by step
    9·1 answer
  • If you have a semi-circle with a diameter of 8.6ft, what's the semi-circles area?
    5·1 answer
  • What is the answer to 1^1+2^2+3^3+4^4
    14·2 answers
  • Classify each polygon by the number of sides. Tell whether it's convex or concave.<br>​
    8·1 answer
  • Rolling an even<br> number and the<br> coin landing on<br> heads
    8·2 answers
  • 1+1= <br><br> Love you guys lol
    7·2 answers
  • A relay race has 4 runners who run different parts of the race. There are 16
    14·1 answer
  • PLEASE ANSWER FAST !!
    7·1 answer
  • Three Step Linear Equations<br><br> Solve for x<br> 8x+5=-6x+3
    14·2 answers
  • Rewrite 10 + 12 using the GCF and factoring.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!