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
Georgia [21]
3 years ago
13

The number of violent crimes committed in a day possesses a distribution with a mean of 2.3 crimes per day and a standard deviat

ion of 2 crimes per day. A random sample of 100 days was observed, and the mean. number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean.
A) shape unknown with mean-2.3 and standard deviation 2
B) approximately normal with mean 2.3 and standard deviation 2
C) shape unknown with mean 2.3 and standard deviation 0.2
D) approximately normal with mean 2.3 and standard deviation 0.2
Mathematics
1 answer:
marusya05 [52]3 years ago
7 0

Answer:

B) approximately normal with mean 2.3 and standard deviation 2

Step-by-step explanation:

Given the following :

Mean crimes per day = 2.3

Standard deviation = 2

Number of samples = 100

Sampling distribution of the mean:

According to the central limit theorem:

Sample mean = population mean

2.3 = 2.3

The standard deviation of the sample (s) : ratio of the population standard deviation and square root of the sample size.

s = population standard deviation / √sample size

s = 2 / √100

s = 2 / 10

s = 0.2

The central limit theorem also posits that once ths sample size is large enough, the sampling of the sample mean will be approximately normal.

Hence, the distribution is approximately normal, with mean of 2.3 and standard deviation of 0.2

You might be interested in
Pleasee! Which expression is equivalent to the given expression? Assume the denominator does not equal zero.
Ilia_Sergeevich [38]

Answer:

A. 2y^4 over x^2

Step-by-step explanation:

4x^4y^6 ÷ 7x^8y^2

First, you will find the GCF of the equation which is: 7x^4y^2 .

Then, you will divide both of the equation by the GCF which will become:

14x^4y^6 ÷ 7x^4y^2 = 2y^4

7x^8y^2 ÷ 7x^4y^2 = x^2

Hence, the final answer is 2y^4 over x^2

6 0
2 years ago
Read 2 more answers
Write a equation that represents this comparison sentence 32 is 8 times as many as 4
inna [77]
32 = 8 x 4 I think that is the answer
7 0
3 years ago
Find slope (17,11), (6,-2)
Snowcat [4.5K]

Answer:

The slope is 1.181818182 or just round to 1.18.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is mod and div helpppppp
lapo4ka [179]
Modular arithmetic is all about finding the remainder from long division (MOD), and the total number of times that a number goes into a division (DIV<span>).</span>
6 0
3 years ago
Solve for h. 15 = -3(h + 12) h =​
cluponka [151]

Answer:

-17

Step-by-step explanation:

15=-3(h+12)

1. Do distributive property

15=-3h-36

-3h=51

H=-17

5 0
3 years ago
Other questions:
  • anna is buying a house selling for 185,000. to obtain the mortgage, anna is required to make a 20% down payment. anna obtains a
    8·1 answer
  • Let v be the vector from initial point upper p 1p1 to terminal point upper p 2p2. write v in terms of i and j.
    5·1 answer
  • What is the LCD of the following rational expressions?
    11·2 answers
  • There are 42 students on a large bus and the rest are on a smaller bus. If 40% of the students are on the smaller bus how many t
    5·1 answer
  • What role do animals have in the carbon cycle?
    14·2 answers
  • Janine babysits for $14.50 per hour. She also works as a dishwasher at her family's restaurant for $9.50 per hour. Her family ne
    12·1 answer
  • Write the sum of <br> 5x2+2x−10 and 2x2+6 as a polynomial in standard form.
    12·1 answer
  • I WILL GIVE BRAINLIEST YALL SEE THOSE POINTS!!!!!!
    5·2 answers
  • When an inclined plane is used,
    15·1 answer
  • HELP ME PLEASE
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!