A quality control engineer Is interested in the mean length of sheet insulation being cut automatically by machine. It is known that the standard deviation in the cutting length that this machine produces is 0.15 feet. A sample of 70 cut sheets yields a mean length of 12.14 feet. This sample will be used to obtain a confidence interval for the mean length cut by machine. Referring to problem statement, the Z value to use in obtaining the 99% confidence interval is approximately .A.1.645B. 1.96C.3.23D.2.58

Answers

Answer 1

Answer:

D.2.58

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.99}{2} = 0.005[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.005 = 0.995[/tex], so Z = 2.58.

The answer is given by option D.


Related Questions

What is the area of the base
48
45
30
24

Answers

Answer:

24

Step-by-step explanation:

HELP PLEASE ASAP !!!!!!!!!!!!!!!!!!!

Answers

The answer is 134cm2:)

Answer:

I think not to sure how I got the answer 134.

What is the typical age of people shown in the frequency table?

Age Tallies Frequency
9 ll 2
10 llllllllllll 15
11 llll lll 8
12 ll 2
9
10
12
11

Answers

Answer:

Step-by-step explanation:

Answer:

I think the answer is ten but I don't know

Step-by-step explanation: from what I'm seeing, there aare more 10 yryes than any other age. Also meaning that ten is the typical age

Find the area of the shape shown below.

Answers

Answer:

42

Step-by-step explanation:

Because of its shape I would imagine another flipped so it makes a square then solve for the square the divide.

7 x 12 =84

84÷2=42

What is the perimeter and area of the composite figure?

Answers

Step-by-step explanation:

▪AB = AC - EF

= 13 cm - 7 cm

= 6 cm

▪BD = CF - DE

= 16 - 8 cm

= 8 cm

BC = EF

perimeter = CF + EF + DE + AD + AB + BC

= 16 + 7 + 8 + 10 + 6 + 7

= 54 cm

Area of triangles = 1/2 × AB × BD

= 1/2 × 6 × 8

= 48/2

= 24 cm²

Area of rectangle = CF × EF

= 16 × 7

= 112 cm²

the total area = 24 + 112

= 136 cm²

#CMIIW

Find x. Round your answer to the nearest tenth of a degree.
9
6
X

Answers

not enough information, assuming you pasted it badly. try including a screenshot instead
I may guesss and say the answer is the third one

w
The table below lists the means and standard deviations for 5th graders in the district and for the norm group for
student performance in four different subjects. According to the table, the performance of the 5th graders in the
district is more variable than that of the norm group in which subject(s)?
ed
ati
n
100
Sc
Geography English Spelling Science
Mean of all 5th graders in District (150 students) 75
125 90
SD of these 5th graders
12
10 12 20
Mean of the Norm Group
85
100 120 90
SD of the Nom Group
10
10 15 15
ww
sti
20
ker
ndo
ted
Geography, Spelling, and Science
Geography and Spelling
Geography and Science
Spelling only
Science only
Geography only
lccr
Sa
le au
isid

Answers

Answer:

Can you please format this? it's hard to understand right now

ITS BASICALLY WHO DID IT RIGHT GUYS, JUST PUT THE PEOPLES NAMES.

Answers

Answer:

marcus

Lilian

Pamela

Step-by-step explanation:

simplefy the expresion wich will equal 58

Answer:

1) Marcus  2) Lillian  3) Pablo

Step-by-step explanation:

For these type of expressions you have to use "PEMDAS"

Parentheses              

Exponents

Multiplication

Division

Addition

Subtraction

(IT ALWAYS HAS TO GO FROM LEFT TO RIGHT)

1) Marcus  Why Marcus?

Because, Melanie added instead of dividing first.

Melanie:                Marcus:

8 x 7 + 14 / 7          8 x 7 + 14 / 7

56 + 14 / 7             56 + 14 / 7

70 / 7                     56 + 2  <---

10                           58

2) Lillian  Why Lillian?

Because, Landon Multiplied instead of dividing.

Lillian:                    Landon:

50 / ([tex]5^{2}[/tex] - 15) x 5     50 / ([tex]5^{2}[/tex] - 15) x 5

50 /  (10) -  5          50 / (10) - 5

5 x 5                      50 / 50  <---

25                          1

3) Pablo  Why Pablo?

Because, Pamela didn't follow the L --> R- (Left to Right) -Rule.

Pablo:                    Pamela:  

(12 + [tex]2^{2}[/tex]) / 4 x 5     (12 + [tex]2^{2}[/tex]) / 4 x 5

([tex]14^{2}[/tex]) / 4 x 5          (12 + 4) / 4 x 5 <---

196 / 4 x 5            16 / 4 x 5

49 x 5                   4 x 5

245                       20

Write each multiplecation setence as an aditon sentence
5X5=25
6X2=12

Answers

5 + 5 + 5 + 5 + 5 = 25

6 + 6 = 12

Hope this helps :)

Step-by-step explanation:

5+5+5+5+5

6+6

hope this helps

10 rubber stamps cost $10.30.
Which equation would help determine the cost of 2 rubber stamps?
Choose 1 answer:

Answers

D because the question would have to be multiply the numbers in a way that would get you the cost of 2 rubber stamps

Make the subject of the following Question

1. 10b= 3

Answers

Answer:

la respuesta que buscas es bastante simple pero no lo sé

Step-by-step explanation:

b=3/10
Alternate form: 0.3

7.1.13 Question Help Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=992 and x = 570 who said 'yes." Use a 99% confidence level. B Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.)​

Answers

Answer:

The Point estimate of the Population proportion  E = 0.039≅0.04

Step-by-step explanation:

Step(i):-

Given that the sample size 'n' = 992

  and                                     x = 570

The Population proportion

                                   [tex]p = \frac{x}{n} = \frac{570}{992} = 0.5745[/tex]

Step(ii):-

The point estimate of the Population proportion is determined by

[tex]E = 2.576 \frac{\sqrt{0.574(1-0.574)} }{\sqrt{992} }[/tex]

E = 0.039≅0.04

Final answer:-

The point estimate of the Population proportion  E = 0.039≅0.04

Answer this correctly and explain your answer I’ll give you brainalist + 10 points

Answers

Answer: A

Step-by-step explanation:

In a triangle, any two sides, when added up need to be greater the last side

9 + 16 > 20

9 + 20 > 16

16 + 20 > 9

help me please ,
if a = 5, what is a +6?

Answers

Answer:

B.11 correct

Step-by-step explanation:

a=5

a+6

5+6=11

11 is the correct answer so B.11 is correct

Answer:

11

Step-by-step explanation:

If a=5 and there is a+6 you need to plug in the 5 from the a=5 in the equation a+6 to get 5+6 which equals 11 :D

£75 in the ratio 8:7

please help​

Answers

Answer:

8: $40

7:$35

Step-by-step explanation:

8+7=15

75/15=5

5x8=40

5x7=35

Mark me as brainliest.

find factors for6v^2+66v+60

Answers

Answer:

6 ( v + 1 ) ( v + 10 )

5. a meteroid travels 6/8 miles
in 30 seconds. How far will it
go in one minute?

Answers

Answer:

1 1/2 miles

Step-by-step explanation:

1 minute = 30 x 2 seconds

6/8 x 2/1 = 12/8 = 1 1/2

Answer:

3/2 miles

Step-by-step explanation:

just multiply by two

What would make this problem no solutions? fill in the blank.

3(3x+2)=9x+ ____

9
2
6
8
12
17

Answers

Answer:

6

Step-by-step explanation:

the answer is six

I hope it helps

What is the distance between point A and point B on the coordinate plane?
HELP PLSS​

Answers

Answer:

3

Step-by-step explanation:

If you count the units its three units away from each other.


Jason owns a party supply store.
He sells balloons for $0.50 each and party hats for $1.25 each.
Jason buys each balloon for $0.10 and each party hat for $0.20.
Which expression represents how much money Jason gains from selling n balloons
and h party hats?
А
0.40n + 1.05h
B
0.60n + 1.45h
С
1.75nh
D
1.45h - 0.60n


Answers

Answer:

A.

Step-by-step explanation:

Balloons sell for $.50 - $.10 (Jason’s cost)= $.40 profit

Party hats sell for $1.25 - $.20 (Jason’s cost) = $1.05 profit.

Therefore, A. 0.40n + 1.05h is the correct answer

please help me :))))))

Answers

The answer is C lol

Answer:

C. 16/41

Because there are 9 blue and 7 Green.

In ΔUVW, the measure of ∠W=90°, the measure of ∠U=61°, and VW = 3 feet. Find the length of UV to the nearest tenth of a foot.

Answers

Answer:

3.4

Step-by-step explanation:

Answer:3.4

Step-by-step explanation:

Clicked see solution

Please help with this math question'

Answers

Answer:

~1.93 seconds

Step-by-step explanation:

Set hight to 0:

0 = -16t^2 + 4t + 52

Rearrange:

16t^2 - 4t - 52

Solve using the quadratic formula: (Only use the positive result)

t = (1 + √209)/8

t ≈ 1.9321

Order the set of numbers from LEAST to GREATEST.
5.72 × 103, 8.12 × 102, 6.1 × 103, 9.11 × 102

A) 5.72 × 103, 6.1 × 103, 9.11 × 102, 8.12 × 102
B) 5.72 × 103, 6.1 × 103, 8.12 × 102, 9.11 × 102
C) 8.12 × 102, 9.11 × 102, 5.72 × 103, 6.1 × 103
D) 9.11 × 102, 8.12 × 102, 5.72 × 103, 6.1 × 103

Answers

B) 5.72 × 103, 6.1 × 103, 8.12 × 102, 9.11 × 102

Answer:

b

Step-by-step explanation: took test

Please help! (simple question)

Answers

Answer:

C. 15

Step-by-step explanation:

3 is 3/5 of 5

so x-6 should be 3/5 of x?

-6 would be 5/5 - 2/5

2/5 = 6

1/5 = 3

5/5 = x = 15

Answer 15 your welcome

Consider again the tossing of a pair of dice. Find the probability the
sum is greater than 6. (Round to the hundredths)

Answers

Answer:

7/12 or 58.333%

Step-by-step explanation:

There are the 36 possible outcomes.  

6+5+4+3+2+1 = 21 are greater than 6  

Probability is 21/36 = 7/12 or 58.333%

Christina built a small hot air balloon and recorded the distance it traveler (v) during the first 4 seconds after starting (s)

Which of the following equations representd the relationship between the distance traveled and the elpsed time?

A: v=1.2s
B: s=1.2v
C:v=1.2+s
D:s=1.2+v

Table is attatched​

Answers

Answer    "v = 1.2s"

Step-by-step explanation: because 1.2 is 1*1.2, 2.4 is 2*1.2 and so on..

The answer is A v=1.2s

Slope -7 and​ y-intercept ​(0,​9)

Answers

Answer:

y = -7x + 9

Step-by-step explanation:

Anyone know the answer?? I’ve asked so many times but nobody seems to explain how to get it and just gives the letter so please explain!! I’ll give brainliest (:

Answers

Answer:

14.

The formula is 2(x-6)+2x=44

someone help me please! with questions 1-4 , geometry is not my strong suit

Answers

Answer:

for the first 2 neither one is a polygon because a polygon has straight sides and is closed connections were the first shape has an open connection and the second shape has a curved line. for question i believe is 48 and question 4 is 145.

explanation.

for the last 2 problems their total equal 360 so you just add up all the side then subtract the number you got by 360 and that's your answer. ex.) 120 +130+ 62=312. 360-312=48

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