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
Brrunno [24]
3 years ago
14

Please answer this correctly

Mathematics
1 answer:
sesenic [268]3 years ago
7 0

Answer:

  0

Step-by-step explanation:

The sorted data set is ...

  1 2 3 3 5 7 8 9

The median is the average of the middle two numbers: (3+5)/2 = 4.

Replacing one of the 3s with a 1 makes the data set be ...

  1 1 2 3 5 7 8 9

The average of the middle two numbers is (3+5)/2 = 4.

The median increases by 4 - 4 = 0.

You might be interested in
Assume the sample variances to be continuous measurements. Find the probability that a random sample of 25observations, from a n
konstantin123 [22]

Answer:

a) P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502

b)P(13.848Step-by-step explanation:

Previous concepts

The Chi Square distribution is the distribution of the sum of squared standard normal deviates .

For this case we assume that the sample variance is given by S^2 and we select a random sample of size n from a normal population with a population variance \sigma^2. And we define the following statistic:

T = \frac{(n-1) S^2}{\sigma^2}

And the distribution for this statistic is T \sim \chi^2_{n-1}

For this case we know that n =25 and \sigma^2 = 6 so then our statistic would be given by:

\chi^2 = \frac{(n-1)S^2}{\sigma^2}=\frac{24 S^2}{6}= 4S^2

With 25-1 =24 degrees of freedom.

Solution to the problem

Part a

For this case we want this probability:

P(S^2 > 9.1)

And we can multiply the inequality by 4 on both sides and we got:

P(4S^2 > 4*9.1) = P(\chi^2_{24} >36.4) = 0.0502

And we can use the following excel code to find it: "=1-CHISQ.DIST(36.4,24,TRUE)"

Part b

For this case we want this probability:

P(3.462 < S^2

If we multiply the inequality by 4 on all the terms we got:

P(3.462*4 < 4S^2 < 4*10.745)= P(13.848< \chi^2And we can find this probability like this:P(13.848And we use the following code to find the answer in excel: "=CHISQ.DIST(42.98,24,TRUE)-CHISQ.DIST(13.848,24,TRUE)"

8 0
2 years ago
6th grade math i mark as brainliest
Natasha_Volkova [10]

Answer:

16

Step-by-step explanation:

8 0
3 years ago
the sum of two numbers is 44. the smaller number is five-sixths of the larger number. what are the numbers?​
Sindrei [870]
X+y=44
x=5/6y

x+y=44
5/6y+y=44
11/6y=44
11y=264
y=24
x=5/6y=(5/6)*24=20
Answers: numbers are 20, 24
7 0
2 years ago
The volume of a box in the shape of a rectangular prism
MakcuM [25]

Answer: 12

Step-by-step explanation:

7 0
2 years ago
Find the next three terms in the sequence. 3, 9, 27, 81
Aliun [14]

Answer:

243

Step-by-step explanation:

3*3=9*3=27*3=81*3=243*3 etc

4 0
2 years ago
Read 2 more answers
Other questions:
  • How to do expanded form and word for for 119 000 003
    12·1 answer
  • −3x + 7y = −16<br> −9x + 5y = 16<br><br> slove this
    10·1 answer
  • A train travels 16 miles in 20 minutes At this rate , how many minutes will it take to trace 12 miles?
    15·1 answer
  • The number has the digits
    11·1 answer
  • Please help ASAP 25 pts + brainliest to right/best answer !!!
    11·1 answer
  • Can someone please help me I really need help please help me
    12·1 answer
  • How to solve 2X^2+Y^2 = X^2-Y^2
    7·1 answer
  • Write a polynomial function of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros.
    13·1 answer
  • What is 3(4x + 9) (im new to this subject of math)
    11·2 answers
  • PLS HELP WILL GIVE BRAINLIEST ANSWER AND LOTS OF POINTS
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!