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
aleksandrvk [35]
2 years ago
7

Guys, I need help ASAP!!

Mathematics
2 answers:
solniwko [45]2 years ago
8 0

Answer:

Pr (3.88 ≤ X ≤ 5.12)

Step-by-step explanation:

the other person is right. i took quizz and got 100% so it has to be the answer

Zarrin [17]2 years ago
7 0

Answer:

The answer is

Pr (3.88 ≤ X ≤ 5.12)

You might be interested in
What is the 50th term of the arithmetic sequence having u(subscript)1 = -2 and d = 5
OLga [1]

Answer:

243

Step-by-step explanation:

The general term for this arithmetic sequence is:

a(n) = -2 + 5(n - 1).

Then a(50) = -2 + 5(49) =   243

8 0
3 years ago
Advertising expenses are a significant component of the cost of goods sold. Listed below is a frequency distribution showing the
Alexxandr [17]

Answer:

Step-by-step explanation:

The table can be computed as:

Advertising Expenses ($ million)     Number of companies

25 up to 35                                                    4

35 up to 45                                                    19

45 up to 55                                                    27

55 up to 65                                                    16

65 up to 75                                                     9

TOTAL                                                            75

Let's find the probabilities first:

P(25 - 35) = P \Big(\dfrac{25-50.93}{10.80}

For 35 up to 45

P(35 - 45) = P \Big(\dfrac{35-50.93}{10.80}

For 45 up to 55

P(45 - 55) = P \Big(\dfrac{45-50.93}{10.80}

For 55 up to 65

P(55 - 65) = P \Big(\dfrac{55-50.93}{10.80}

For 65 up to 75

P(65 - 75) = P \Big(\dfrac{65-50.93}{10.80}

Chi-Square Table can be computed as follows:

Expense   No of   Probabilities(P)  Expe                (O-E)^2   \dfrac{(O-E)^2}{E}

             compa                                 cted E (n*p)

             nies (O)  

25-35           4      0.0612    75*0.0612 = 4.59        0.3481       0.0758

35-45           19     0.2218   75*0.2218 = 16.635     5.5932       0.3362

45-55           27     0.3568   75*0.3568 = 26.76     0.0576      0.021

55-65           16      0.2552   75*0.2552 = 19.14      9.8596      0.5151

65-75           9      0.0839     75*0.0839 = 6.2925   7.331         1.1650

                                                                                           \sum \dfrac{(O-E)^2}{E}= 2.0492                                                                                                      

Using the Chi-square formula:

X^2 = \dfrac{(O-E)^2}{E} \\ \\ Chi-square  \ X^2 = 2.0942

Null hypothesis:

H_o: \text{The population of advertising expenses follows a normal distribution}

Alternative hypothesis:  

H_a: \text{The population of advertising expenses does not follows a normal distribution}

Assume that:

\alpha = 0.02

degree of freedom:

= n-1

= 5 -1

= 4

Critical value from X^2 = 11.667

Decision rule: To reject H_o  \  if \  X^2  test statistics is greater than X^2 tabulated.

Conclusion: Since X^2 = 2.0942 is less than critical value 11.667. Then we fail to reject H_o

6 0
3 years ago
Fayzansabeel is a very brainly user!!!
wariber [46]

Answer:

oh ok.. can i get ur intro??

3 0
2 years ago
Read 2 more answers
Please answer both question fully.
BARSIC [14]

Step-by-step explanation:

<h3>Part A</h3>

<u>Angle measures:</u>

  • a = x = z = 51° (as vertical angles and corresponding angles)
  • b = d = y = w = 180° - 51° = 129° (as supplementary angles and corresponding angles)
<h3>Part B</h3>

Supplementary angles for a linear pair and sum to 180°.

<u>Examples are:</u>

  • a and b or
  • a and d or
  • x and y etc.
7 0
2 years ago
Read 2 more answers
the number of cars on equally Arbor Road in here 2007 was 2500 in Year 2014 the number is 4000 calculate the percentage increase
Zepler [3.9K]

Answer:

(4000/2500)100=160%

3 0
3 years ago
Other questions:
  • PLEASE HELP I DONT HAVE MUCH TIME LEFT!!! URGENT!!! WILL GIVE BRAINLIEST TO FASTEST ANSWER!! Maria and Jamal each have gardens.
    7·2 answers
  • What formular for surface area of hemisphere
    10·1 answer
  • Juan and Raj cut up a banana to put on cereal. Juan puts 17 of the banana on his bowl of cereal, and Raj puts 25 ​ of the banana
    5·1 answer
  • Did I do the reasons right?
    12·2 answers
  • What is the least common multiple of 35 and 17?<br> PLEASE HELP ME!!!​
    8·2 answers
  • The segments shown below could form a triangle.
    9·1 answer
  • SOMEBODY HELP ME ASAP​
    15·1 answer
  • What is the inverse of the function y-2 = 7x?
    8·1 answer
  • Determine the missing length in each right triangle using the Pythagorean theorem. Round the answer to the nearest tenth, if nec
    9·1 answer
  • Issaiah Jones Unit Rate, Reasoning Down Dec 06, 7:36:45 PM Watch help video HII Julian earned $437.00 at his job when he worked
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!