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
tamaranim1 [39]
3 years ago
5

An experiment is conducted to compare the maximum load capacity in tons​ (the maximum weight that can be tolerated without​ brea

king) for two alloys A and B. It is known that the two standard deviations in load capacity are equal at 7 tons each. The experiment is conducted on 30 specimens of each alloy​ (A and​ B) and the results are x overbarAequals65.6​, x overbarBequals60.6​, and x overbarAminusx overbarBequals5. The manufacturers of alloy A are convinced that this evidence shows conclusively that muAgreater thanmuB and strongly supports the claim that their alloy is superior. Manufacturers of alloy B claim that the experiment could easily have given x overbarAminusx overbarBequals5 even if the two population means are equal. Complete parts​ (a) and​ (b) below.
Mathematics
1 answer:
prohojiy [21]3 years ago
7 0

Answer:

kookooo

Step-by-step explanation:

You might be interested in
How many square inches of tin are needed to make the top of a can that is 10 inches in diameter? A) 62.8 in2 B) 78.5 in2 C) 227
Xelga [282]
Area of a circle = PI*radius^2
10 inch diameter = 5 inch radius
Area = PI* 5^2
Area = <span> <span> <span> 78.5398163397 </span> </span> </span>
Answer is B)


8 0
3 years ago
Read 2 more answers
Choose the scatter plot that shows a negative correlation.
Alenkinab [10]

Negative correlation between two variables means when x is increasing but y is decreasing or vice versa.

First graph of suffered animals and children shows a positive slope which means if age of child increasing then numbers of suffered animal is also increasing.So, the first graph show a positive correclation.

Second graph of survey of adults doesn't represnt any distinct relationship as the data scattered randomly everywhere in the graph. So, it's showsa very week correlation.

Third graph of speed and MPG shows a negative slope as speed is increasing then MPG is decreasing. So, the third graph (speed and MPG) shows a negative correlation.

4 0
2 years ago
Read 2 more answers
josh currently bench presses 150lbs.he increases that amount by 10% a month for 3 months about how much can be bench press now
Tomtit [17]
150 times .1 is 15 so add 15 to 150 and get 165 then times that by .1 and get 16.5 add to 165 and get 181.5 times .1 and get 18.15 and add to 181.5 and get 199.65 as the answer. 
7 0
3 years ago
{1,2,3,...,75,76,78} how many numbers in the set above have 2 as a factor but not have 10 as a factor
Alinara [238K]

Answer:

<h2>A) 32</h2>

Step-by-step explanation:

From 1 to 10 we have 4 numbers which are {2,4,6,8}

From 10 to 20 we have 4 numbers which are {12,14,16,18}

.

.

.

From 70 to 78 we have 4 numbers which are {72,747,6,78}

<em><u>conclusion:</u></em> we 4×8 number = 32

5 0
3 years ago
What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer
worty [1.4K]

Take  2 points: (0, 70) (30, 80)

SLOPE FORMULA: y2 -y1 / x2 - x1

y2 - y1: 80 - 70 = 10

x2 - x1: 30-0 = 30

10 / 30

simplify: 1/3

This is a PROPER FRACTION

5 0
3 years ago
Other questions:
  • A 250-kVA, three-phase, 480-volt transformer requires 75 gallons of insulating oil to keep it properly cooled. How many liters i
    7·1 answer
  • I need help with these two problems... PLZ HELP ME!!!!!!!
    14·1 answer
  • What is a polyhedral?
    15·2 answers
  • (2-8i)^2 show work please
    14·1 answer
  • A condition expresses a hypothesis about the state of its world at that point in time.a. False b. True
    15·1 answer
  • -3/2(x-2) +1=4<br> Justify your steps
    6·1 answer
  • Kate has 25 skirts, out of which 10 are white. if Kate randomly selects a skirt to wear, what is the probability it will be whit
    11·2 answers
  • Find the surface area?
    5·1 answer
  • Help me please ?? ASAP!!
    5·2 answers
  • Which range of y values makes
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!