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
Tatiana [17]
3 years ago
9

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 117.7-cm and a standard dev

iation of 2.2-cm. For shipment, 29 steel rods are bundled together. Find the probability that the average length of a randomly selected bundle of steel rods is greater than 118.5-cm.
Mathematics
1 answer:
Andre45 [30]3 years ago
7 0

Answer:

Required probability is 0.9748

Step-by-step explanation:

given data

mean \mu = 117.7-cm

standard deviation \sigma = 2.2-cm

sample size n = 29

solution

we consider here random variable which represents here length of rod= x

so get here first z that is express as

Z = \dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}    

put here value with x value 118.5-cm

Z = \dfrac{118.5-117.7}{\dfrac{2.2}{\sqrt{29}}}

Z = 1.9582

p value is 0.9748

so required probability is 0.9748

You might be interested in
Six students collect buttons for a project. The students have 10, 14, 15, 12, 13, and 14 buttons. They divide the buttons evenly
vovangra [49]

Answer:

13 buttons

Step-by-step explanation:

The first step is to add the buttons received by the 6 students.

= 10 + 14 + 15 + 12 + 13 + 14

= 78 buttons

Therefore the number of buttons received by each students can be calculated as follows

= 78/6

= 13 buttons

Hence each student will receive 13 buttons

6 0
2 years ago
Read 2 more answers
What is the equation in point-slope form of the line passing through (−2, 0) and (2, 8)? (1 point) y = 2(x + 2) y = 2(x − 2) y =
Sonja [21]

Answer: y=2(x+2)

Step-by-step explanation:

The slope of the line is

y=\frac{8-0}{2-(-2)}=\frac{8}{4}=2

Using the point (-2, 0) to substitute into point-slope form, we get the equation to be \boxed{y=2(x+2)}

8 0
1 year ago
Can y’all help me with this
nalin [4]

Step-by-step explanation:

i really dont know tbh that confusing

3 0
2 years ago
Read 2 more answers
List the first 5 terms of the sequence -3n -2.<br>​
katrin2010 [14]

Answer:

-5,-8,-11,-14,-17

Step-by-step explanation:

-3n -2

n=1   -3(1) -2 = -3-2 = -5

n=2   -3(2) -2 = -6-2 = -8

n=3   -3(3) -2 = -9-2 = -11

n=4   -3(4) -2 = -12-2 = -14

n=5   -3(5) -2 = -15-2 = -17

7 0
3 years ago
Read 2 more answers
I need the answers for this question.
nadya68 [22]

Answer:

7

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • The probability of flowering plants bearing flowers in January is given in the table. FlowerBearing Flowers
    13·2 answers
  • What’s the point of the tangency
    11·2 answers
  • 5=-2n<br> helpppppppppppppppppppppppppppppppppppppppppp
    11·1 answer
  • A traveling soccer team allows only the top 3% of athletes who try out to be part of the team. If the team tryout scorecard has
    6·2 answers
  • 5/9 x 6 as a fraction in simplest form
    14·1 answer
  • Brian invests £1500 into his bank account. He receives 2% per year simple interest. How much will Brian have after 3 years? Give
    13·1 answer
  • High population density can cause increased competition for resources such as food or shelter, while a low population density ca
    13·1 answer
  • this year benny is 12 years old and his mom is 48 years old, what percent of Benny's age is his mom's age?​
    15·2 answers
  • 10 0 POINTS !!<br><br><br> PLEASE HELP !! ILL GIVE BRAINLIEST TO THE RIGHT ANSWERS.
    12·1 answer
  • Joe mixed 10 ozs of blue paint with 4 oz of white paint. he wants to make a batch using 18 oz of white paint, how much blue pain
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!