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
V125BC [204]
3 years ago
14

The batteries produced in a manufacturing plant have a mean time to failure of 30 months, with a standard deviation of 2 months.

I select a simple random sample of 400 batteries produced in the manufacturing plant. I test each and record how long it takes for each battery to fail. I then compute that the average failure time of the 400 batteries is 29.9 months with a standard deviation of 2.15 months. In this scenario, the value 30 is:
Mathematics
1 answer:
Oduvanchick [21]3 years ago
8 0

Answer:

The population mean.

Step-by-step explanation:

29.9 is the <u>sample</u> mean.

You might be interested in
Colin buys a car for £15500.
timama [110]

Answer:

£14889.30

Step-by-step explanation:

The cost of the car = £15500.

For the first year,

depreciation = £15500 x 1%

                     = £155

Its worth after the first year = £15500 - £155

                             = £15345

For the 2nd year,

depreciation = £15345 x 1%

                     = £153.45

Its worth after the second year = £15345 - £153.45

                                 = £15191.55

For the 3rd year,

depreciation = £15191.55 x 1%

                      = £151.9155

Its worth after the third year = £15191.55 - £151.9155

                                            = £15039.6345

For the 4th year,

depreciation = £15039.6345 x 1%

                     = £150.3963

Its worth after the fourth year = £15039.6345 - £150.3963

                                             = £14889.2382

Thus, the worth of the car in 4 years would be £14889.30

8 0
2 years ago
Please help.. pleaseeee
Luba_88 [7]
False
true
false
false
7 0
3 years ago
Read 2 more answers
An inventory record for the bookstore of a local college shows a receipt of 150 accounting books on May 1. Another shipment of 2
babunello [35]
Hi there
Let's order the transactions
on May 1. 150
less On May 20 100 books were sold

Less June 3, 31 books were purchased by the students

Add on June 15 25 books arrived

Add On June 17, a shipment of 150 books arrived

So
the number on hand on June 17
150−100−31+25+150
=194....answer

Hope it helps
4 0
3 years ago
A transformation is applied to the smaller triangle, A, to
Sergio039 [100]

Answer:  dilation

Step-by-step explanation:

8 0
3 years ago
each day last week, Ms. wilson walked3/4 mile. what is the total distance, in miles, that Ms. Wilson walked in 4 days?
zloy xaker [14]
Hey there! :D

Since she walks 3/4 a mile a day, we can multiply that by 4.

3/4= .75

4*.75= 3

She walked 3 miles in 4 days.

I hope this helps!
~kaikers
6 0
3 years ago
Read 2 more answers
Other questions:
  • Use properties to find the sum or product 5×23×2
    7·1 answer
  • A triangle can be classified as both equilateral and right. True of False?
    9·2 answers
  • Negative three forths plus one eighth
    12·2 answers
  • 20 POINTS AND I WILL MARK YOU BRAINISET!!!!! PLEASE COMPLETE ASAP!!
    12·2 answers
  • A rectangle or pyramid has a volume of 1296 in.³, a height of 24 inches, and a base length of 6 inches. What is the width of its
    9·1 answer
  • Determine the value of x in the system of equations. 4x+2y=50 x−3y=30
    12·1 answer
  • 7w + 6(3w + 9)<br> Help ASAP
    7·2 answers
  • What is 2x - 3y is less than or equal to 12?<br><br>Please I am desperate!!!!!!!!!!!!
    12·2 answers
  • Which choice is equivalent to the product below?
    9·1 answer
  • What is the probability that the employee is less than 175 cm tall- chosen from those with brown hair
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!