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
Dmitry_Shevchenko [17]
3 years ago
10

A manufacturer of carpentry screws claims that its production machine is very accurate and that the standard deviation of the le

ngth of all screws produced is .08 mm or less. A sample of 30 screws showed a standard deviation of .10. The test statistic to test the manufacturer's claim is _____. a. 45.31 b. 19.2 c. 23.2 d. 18.56
Mathematics
1 answer:
Ratling [72]3 years ago
4 0

Answer:

Option (a) 45.31

Step-by-step explanation:

Data provided in the question:

Standard deviation, σ = 0.08 mm

Sample size, n = 30

standard deviation of 30 samples, s = 0.10

Now,

σ² = (0.08)² = 0.0064

s² = (0.10)² = 0.01

Test Statistic = [ ( n - 1) × s²] ÷ σ²

or

Test Statistic = [ (30 - 1 ) × 0.01 ] ÷ 0.0064

= ( 29 × 0.01 ) ÷ 0.0064

= 45.31

Hence,

Option (a) 45.31

You might be interested in
What is the LCD of 1/6 and 5/4
slavikrds [6]

Answer:

12

Step-by-step explanation:

6  = 2*3

4 = 2*2

The least common multiple is

2*2*3 = 12

The least common denominator is 12

7 0
3 years ago
Read 2 more answers
There are 45 questions on your math exam. You answered 8/10 how many questions did you answer correctly?
Dima020 [189]
36 questions correctly
4 0
2 years ago
Read 2 more answers
The mean salary if of 5 employees is $35900. the median is $37000. the mode is $382000. If the median payed employee gets a $310
mr Goodwill [35]

Answer:

Step-by-step explanation:

New median:40100

New mode:385100

5 0
3 years ago
Dubnium-262 has a half-life of 34 s. How long will it take for 500.0 grams to
dmitriy555 [2]

Answer:

the time taken for the radioactive element to decay to 1 g is 304.8 s.

Step-by-step explanation:

Given;

half-life of the given Dubnium = 34 s

initial mass of the given Dubnium, m₀ = 500 grams

final mass of the element, mf = 1 g

The time taken for the radioactive element to decay to its final mass is calculated as follows;

1 = 500 (0.5)^{\frac{t}{34}} \\\\\frac{1}{500} =  (0.5)^{\frac{t}{34}}\\\\log(\frac{1}{500}) = log [(0.5)^{\frac{t}{34}}]\\\\log(\frac{1}{500})  = \frac{t}{34} log(0.5)\\\\-2.699 = \frac{t}{34} (-0.301)\\\\t = \frac{2.699 \times 34}{0.301} \\\\t = 304.8 \ s

Therefore, the time taken for the radioactive element to decay to 1 g is 304.8 s.

4 0
2 years ago
Please answer this correctly without making mistakes
Mnenie [13.5K]

Answer:

<

Step-by-step explanation:

750,000,000 times 10^5 can be expressed as 7.5 times 10^{11}

7.55 times 10^13 is greater than 7.5 times 10^11.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Factor 8q^2 + 3m + 4qm + 6q=
    14·1 answer
  • In September. There were 16 members in the memeber club .In October the number of memeber club was 24 .what percent increase fro
    12·1 answer
  • Find the general solution of the nonhomogeneous differential equation x^2y''-2y=3(x^2) -1, (x&gt;0).
    11·1 answer
  • In a grid of a backyard, the vertices of the floor of a shed are (20, 80), (50, 60), (50, 20), and (20, 20). The coordinates are
    9·1 answer
  • HELLPPP! WILL MARK BRAINLISEST
    12·1 answer
  • Help which one is call u do a little explaining of how u got it need help also not just answer
    11·1 answer
  • The regional transit authority for major metropolitan area wants to determine whether this relationship between the age of a bus
    12·1 answer
  • SOMEONE PLEASE HELP!!
    6·2 answers
  • Pls help!! given: angles 1 and 2 are a linear pair prove that x=11
    15·1 answer
  • Help me please!!!??<br>​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!