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mr_godi [17]
1 year ago
6

A manufacturer of pacemakers wants the standard deviation of the lifetimes of the batteries to be less than 1.8 months. A sample

of 20 batteries had a standard deviation of 1.6 months. Assume the variable is normally distributed. Find the 95% confidence interval of the standard deviation of the batteries. Based on this answer, do you feel that 1.8 months is a reasonable estimate?
Mathematics
1 answer:
kodGreya [7K]1 year ago
3 0

Answer:

Look down my answer↓:

Step-by-step explanation:

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(If gets it right get's brainliest)If the hypotenuse of an isosceles right triangle is 14, what is the area of the triangle?
Strike441 [17]

Answer:

49 unit²

Step-by-step explanation:

Right triangle with equal legs given, let the leg be x.

<u>Hypotenuse of isosceles right triangle is </u>

  • √x² + x² = x√2

<u>Area of triangle:</u>

  • 1/2ah= 1/2x²

<u>Since we have hypotenuse = 14 units:</u>

  • x√2=14
  • x= 14/√2

<u>Then area:</u>

  • 1/2x² = 1/2*(14/√2)² = 1/2*14²/2 = 7² = 49 unit²
3 0
3 years ago
You are riding a roller coaster when a shoe falls off your foot. The function y=180−16t2 represents the height y (in feet) of th
Troyanec [42]
3

When you plug in 36 for y, you get 3
3 0
3 years ago
Which of the following best describes the term induction?
tatiyna

Answer:

C. Starting with a given set of rules and figuring out what must be  true . TRUE

Step by step explanation:

Mathematical Induction

Mathematical Induction is a mathematical technique which we can use to prove any given mathematical statement, result, theorem or corollary with help of induction.

Here, we assume the statement to be true for a smaller natural number            (Usually 1) and then prove the statement to be true for ANY ARBITRARY NUMBER say k.

Now, from the given options:

A. Writing down the steps to solve a complicated math problem .

FALSE as the induction method is based on ASSUMPTION and INDUCTION.

B. Forming rules based upon observations and experiences .

FALSE as the induction method is based on ASSUMPTION and INDUCTION.  We need to induce the needed  statement or Result.

C. Starting with a given set of rules and figuring out what must be  true .

TRUE as the induction method is based on ASSUMPTION and INDUCTION.

We try and find out  the result with the given existing data.

D. Reducing the solution to a problem in lowest terms.

FALSE as the induction method is based on ASSUMPTION and INDUCTION.  

7 0
3 years ago
What’s the correct answer for this question?
Genrish500 [490]

Answer:

PO = 20

Step-by-step explanation:

They are equidistant from the centre

PG = GO

x-4=1/2x+3

Multiplying both sides by 2

2(x-4)=x+6

2x-8=x+6

2x-x = 6+8

x = 14

Now

PO = 14-4+7+3

PO = 10+10

PO = 20

7 0
3 years ago
Pleas help it’s due tomrrow
katovenus [111]

Answer:

Step-by-step explanation:

K is located at -25

L is located at -15

just move 5 units away from J on both sides

hope this helps <3

5 0
3 years ago
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