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
Sergeeva-Olga [200]
2 years ago
10

Given a population mean of 53.7 with a standard deviation of 1.3 and a sample size

Mathematics
1 answer:
a_sh-v [17]2 years ago
3 0

Answer: A. 0.4899 B. 14

Step-by-step explanation:

If X = random variable

then, the standard deviation of the sampling distribution of X = \dfrac{\sigma}{\sqrt{n}}

A.

GIven: \sigma= 1.2, \n= 6

The standard deviation of the sampling distribution of X = \dfrac{1.2}{\sqrt{6}}=0.4899

B. Let n be the sample size,

0.325=\dfrac{1.2}{\sqrt{n}}\\\\\Rightarrow\ \sqrt{n}=\dfrac{1.2}{0.325}\\\\\Rightarrow\ \sqrt{n}=3.69230769231\\\\\Rightarrow\ n= (3.69230769231)^2=13.6331360947\approx 14

Hence, the required sample size = 14

You might be interested in
Which equation is represented by the graph below? y=ln x y=ln x+1 y=e^x y=e^x+1
Illusion [34]

Answer:

y = e^x

Step-by-step explanation:

The fastest way to do this is to use a graphing calc or an online graphing platform and check to see which graph matches the one given.

7 0
3 years ago
Plzzzzzzzz help me it’s urgent
zavuch27 [327]
It should be A.
i know this because a proportion line is a straight line that travels through the origin.
7 0
3 years ago
Find the value of x, rounded to the nearest tenth?
Stolb23 [73]

Answer:

Step-by-step explanation:

we can use the trigonometric function in a right triangle

cos x = adjacent side to the angle /hypothenuse

cos 36°= x/10  ; multiply both sides by 10

10 * cos 36° = x ; make sure your calculator mode is in degrees

8.1  = x

4 0
3 years ago
HELP 1 QUESTION!! IREADY!!! EXPLAIN!!
Anit [1.1K]
The linear equation (y = mx + b) for this particular line is d = 0.6t
it's the same as finding the equation for any line except they use d instead of y and t instead of x. The slope m is 0.6 and intercept is zero.
4 0
3 years ago
An electric company has to track on-time payments and late payments for each customer monthly. It is impossible for a customer t
OLga [1]

Answer:

The  probability that a customer pays late each month is    P(B)  =  0.27

Step-by-step explanation:

Let     P( A ) be the probability that the customer pays on time and the value is  0.55

Let  P( B )  be the  probability that a customer pays late each month

So

  The probability that a customer pays late or on-time each month  is  P(A u B) and  the value is  0.82

The probability that a customer pays on-time and late each month is  P(A n B) and  the value is  zero ( 0 ) given that it is impossible

   Now The probability that a customer pays late or on-time each month  is mathematically represented as

      P(A u B)  =  P(A) +  P(B)  -   P(A n B)

=>     0.82  =  0.55 + P( B ) -   0

=>    P(B)  =  0.27

8 0
3 years ago
Other questions:
  • Will award Brainlist! Solve the inequality. Graph the solution. 4(w−6)≤−12
    12·2 answers
  • Angles 1 and 2 are supplementary. If <1 measures 116 degress, what is the measure of <2
    7·2 answers
  • the shelf life of fresh bread has a mean of 6 days with a standard deviation of 1/2 of a day. what percent of loaves at the bake
    15·1 answer
  • (I WILL GIVE BRAINLIEST)
    7·1 answer
  • I just need the Point-Slope Form equation
    14·1 answer
  • William has ​$27,000 invested in stock A and stock B. Stock A currently sells for ​$30 a share and stock B sells for ​$90 a shar
    9·1 answer
  • 4÷5 = 12 divided by how much
    8·2 answers
  • Name two pairs of similar triangles and justify you answer
    11·1 answer
  • I need the answer asap
    12·1 answer
  • A salesperson works 40 hours per week at a job where she has two options for being paid. Option A is an hourly wage of ​14$. Opt
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!