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
WINSTONCH [101]
3 years ago
5

A simple random sample of 100 men is chosen form a population with mean height 71 in and standard deviation 2.5 in. What is the

probability that the average height of the men in the sample is less than 70.5in?
Mathematics
1 answer:
ankoles [38]3 years ago
5 0

Answer:

2.28%

Step-by-step explanation:

The z score is used to determine how many standard deviations that the raw score is above or below the mean. If the z score is positive then the raw score is above the mean and if it is negative then it is below the mean. It is given by:

z=\frac{x-\mu}{\sigma}\\ \\\mu = mean, \sigma=standard\ deviation,x=raw\ score\\\\For\ a\ sample\ n\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\For\ x

You might be interested in
True statement about parallelogram
aalyn [17]

All four sides are congruent.

4 0
3 years ago
Read 2 more answers
Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made.
Svetlanka [38]
Step 1 A is correct.....
6 0
3 years ago
Please can someone help.
Vedmedyk [2.9K]

Answer:

Step-by-step explanation:

Challenge # 1

Line has a negative slope with positive slope.

Therefore, equation will be,

y = 1.5x - 6

Parallel line to the given line will have same slope = 1.5 but with different y-intercept.

Equation of the parallel line → y = 1.5x + 6

Challenge # 2

Line has a negative y-intercept = -1 (Approx.)

Slope of the line = negative

Therefore, equation of the line will be,

y = -3.7x -1

Line parallel to the given line will have same slope but different y-intercept.

Equation of the parallel line → y = -3.7x + 1

Challenge # 3

Line with negative slope and no y-intercept.

y = -0.8x

Parallel line to the given line will have same slope and different y-intercept.

Equation of the parallel line → y = -0.8x + 1

Challenge # 4

Line in the graph has positive slope and negative y-intercept.

y = -5 + 4.2x

Line parallel to the given line will have same slope but different y-intercept.

Equation of the parallel line → y = - 7 + 4.2x

4 0
3 years ago
X-5+2x-7 find the vale pleaser!!
frosja888 [35]

Answer:

12

Step-by-step explanation:

They are the same angle so they must be equal.

So, x+5 = 2x-7

     5+7 = 2x-x

        12 = x

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=4%20%2B%20%20%7B5%7D%5E%7B2%7D%20" id="TexFormula1" title="4 + {5}^{2} " alt="4 + {5}^{2} "
Tju [1.3M]
5 squared is 25. 25+4. Answer is 29
5 0
3 years ago
Read 2 more answers
Other questions:
  • Please expand the logarithmic expression: Log3(7X^3Y^2)
    9·1 answer
  • What is (2m+5) to the second power =0
    13·1 answer
  • How many unique triangles can be made where one angle measures 60° and another angle is an obtuse angle? 1 2 More than 2 None
    6·2 answers
  • Write the equation of the​ line, with the given​ properties, in​ slope-intercept form. Slope=- 7​, through ​(- 4​,8​)
    6·1 answer
  • Giv
    12·1 answer
  • Y = 6x<br> 2х + Зу = -20
    14·1 answer
  • A. (0, -2)
    11·1 answer
  • Can the probability of an event be greater than 1
    11·1 answer
  • For f(x) = -4x + 2, find f(1).
    15·1 answer
  • silicon chips were packed 420 to the box. if 130,420 chips were to be shipped, how many boxes would be needed
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!