The mean and standard deviation of a normal distribution are 150 and 12
respectively. What percentage of values lie between:
a) 138 and 162
b) 126 and 174
c) 126 and 162
d) 162 and 174​

Answers

Answer 1

a) (150 - 138) / 12 = 1 deviation or 34%

(162 - 150) / 12 = 1 deviation or 34%

34% + 34% = 68%

b) (150 - 126) / 12 = 2 deviations or 47.5%

(174 - 150) / 12 = 2 deviations or 47.5%

47.5% + 47.5% =95%

c) (150 - 126) / 12 = 2 deviations or 47.5%

(162 - 150) / 12 = 1 deviation or 34%

47.5% + 34% = 81.5%

d) (162 - 150) / 12 = 1 deviation or 34%

(174 - 150) / 12 = 2 deviations or 47.5%

This problem is a little different. We have to subtract 34% from 47.5%

47.5% - 34% = 13.5%


Related Questions

PLZ FAST I DONT WANNA DIE

Answers

Answer:

x=15

Step-by-step explanation:

<GCB=180-5x

<EBA=9x

<DAC=8x

The sum of the three exterior angles equals 360.

(180-5x)+9x+8x=360

180-5x+9x+8x=360

-5x+9x+8x=360-180

12x=180

x=15

Yoko has a rectangular poster that is 15centimeters long and 12 centimeters wide. What is the area of the poster in square meters.

Answers

Answer:

44

Step-by-step explanation:

you would add 15+15 and 12+12 because it is rectangular meaning there are 4 sides 2 for the y angle and 2 for the x angle

What is 40% of 50,000

Answers

Step-by-step explanation:

this is your answer...........

Find the SUM of the first 20 terms in the following sequence.
2, 5, 8...

Answers

Step-by-step explanation:

2+3=5+3=8

2+5+8+11+14+17+20+23+26+29+32+35+38+41+44+47+50+53+56+59=

610

hope it helps!

Solve inequality.
|3n-2|-2<1

Answers

[tex]\text{Hello there! :)}[/tex]

[tex]\boxed{-1/3 < n < 5/3}[/tex]

[tex]|3n - 2| - 2 < 1[/tex]

[tex]\text{Begin simplifying by adding 2 to both sides:}[/tex]

[tex]|3n - 2| < 3[/tex]

[tex]\text{ Solve for the positive and negative solutions:}[/tex]

[tex]3n - 2 < 3\\\\3n < 5\\\\n < 5/3[/tex]

[tex]-(3n - 2) < 3\\\\\text{Switch sign when dividing by a negative:}\\\\3n - 2 > - 3\\\\3n > - 1\\\\n > -1/3[/tex]

[tex]\text{Therefore, the solutions for the inequality are:}\\\\-1/3 < n < 5/3[/tex]

A hot air balloon has a height of 50 feet and is rising at a rate of 5 feet per minute. Another hot air balloon has a height of 70 feet and is rising at a rate of 3 feet per minute. After how many minutes will the balloons be at the same height?


If the number of minutes is represented by the variable x, then choose the equation that can be used to solve the problem.

Answers

Stupid do 22949949+r4848488) cuh x9x plays th e sum 69 to find the division time one times to

Matthew is preheating his oven before using it to bake. The initial temperature of the oven is 65° and the temperature will increase at a rate of 15° per minute after being turned on. What is the temperature of the oven 17 minutes after being turned on? What is the temperature of the oven tt minutes after being turned on?

Answers

17 x 15 = 225
225 + 65 = 290
290°

Serena makes $9 per hour cutting lawns. Each day, she earns about $15 in tips. If Serena made no less than $110 on Monday, which inequality represents h, the number of hours she worked on Monday? 15 h + 9 less-than-or-equal-to 110 15 h + 9 greater-than-or-equal-to 110 9 h + 15 greater-than-or-equal-to 110 9 h + 15 less-than 110

Answers

Answer:  9h+15 > 110

Step-by-step explanation: ed 2020

2a−1/2a and 3a−1/3a , where a is a positive number.

Answers

Answer:

3/2a8/3a

Step-by-step explanation:

Maybe you want to simplify each of these expressions.

  2a -1/2a = (2 -1/2)a = (3/2)a

__

  3a -1/3a = (3 -1/3)a = (8/3)a

On Monday, you swim 12 laps in 30 minutes. On Tuesday, you swim 15 laps in 45 minutes. Are these rates proportional?

Answers

Answer:

no.

Step-by-step explanation:

12/30 =  0.4

15/45 = 1/3

9.63 repeating as a mixed number

Answers

Answer:

9 and 7/11

Step-by-step explanation:

i hope this helps

d= V(x2 – x1)2 + (y2 – yy)2

Answers

Answer:

y = 2

Step-by-step explanation:  divided both from each side

Un comerciante compró 6 camionetas por $2310000. si quiere obtener una ganancia total de $577500 ¿en cuanto debe vender cada camión?

Answers

1.5 es la respuesta!!!!!!!!!

(3 + 2i) - (5 -7i) Write answer in standard form a +bi

Answers

(3 + 2i) - (5 - 7i)

Distribute the - sign

3 + 2i - 5 + 7i

Combine like terms

-2 + 9i

Add. (f + 3) + (2f + 8)

Answers

Answer:

3f +11

Step-by-step explanation:

[tex](f + 3) + (2f + 8)[/tex]

Open the bracket

[tex]f + 3 + 2f + 8[/tex]

Group like terms

[tex]f + 2f + 3 + 8 \\ [/tex]

Simplify

[tex]3f + 11[/tex]

Answer:

it should be 3f+11

Step-by-step explanation:

Solve for r in terms of s, t, and u.
t=u-s+r

Answers

Answer:

r = t - u - s

Step-by-step explanation:

To solve for r in terms of s, t, and u, means to have r on one side and have t, u, and s.

t = u - s + r

t - u = s + r

t - u - s = r

10 POINTS : What is the solution? (the x-value)
-0.41x + 2.9 = 8.1x + 45.64

Answers

Answer:

x= - 4274/851 or -5.02

Step-by-step explanation:

12(p - 5) - 12 = 0
Please help quick!!!!! This is due at 8:00 AM!!!!!

Answers

12(p-5)-12=0
You add 12 to both sides
12(p-5)=12
Divide both sides by 12
P-5=1
Then we add both sides by 5
P=1+5
Which gives us P=6

I really need help with this question

Answers

$518.5 = $375 + $41x

Now that we have our equation, let's solve for the # of hours

Subtract $375 from both sides

$143.5 = $41x

Divide both sides by $41

3.5 = x

The number of labor hours was 3.5

You are selling candy bars for the school to
pay for your senior trip which costs $300. If
each candy bar costs $1.25 and you already
have $50 in sales. How many more candy
bars do you need to sell?

Answers

Answer:

200 bars

Step-by-step explanation:

$300 - $50 = the amount of money you still need, $250

250 dollars/$1.25 per bar = 200 bars you need to sell to get 300 dollars

Name a line by any two points on the line, or a lowercase script letter.

Answers

Answer:

Step-by-step explanation: A    B

Lines can be named using any two points on the line or using a single cusive lowercase letter.

You are part of a construction company that is supposed to build houses. An architect has left plans to build houses on each island. Bridges connect the islands. Island A and Island B have a total of 25 houses. Island A and Island C have a total of 10 houses. Island B and Island C have a total of 25 houses. A total of 30 houses is to be built on the three islands. Determine how many houses are to be built on each island.

Answers

Answer:

Island A=5

Island B=20

Island C=5

Step-by-step explanation:

Island AB=25 house

Island AC=10 house

Island BC=25 house

Total =30 house

30-25 to get the house on island C which is 5

30-10 to get the house on island B which is 20

30 -25 to get the house on island A which is 5

Que es un paralelogramo

Answers

what? can you say that in english

Nash is training for a marathon and decides to train for 26 miles every week. In the first week, the ratio of the number of miles he ran to the number of miles he walked 3:10. In the fifth week the ration ran to walked is 8:5. How many miles did nash run in week 5

Answers

Answer:

16 miles

Step-by-step explanation:

From the question given above, the following data were obtained:

Miles per week for training = 26 miles.

In the 5th week:

Ratio of miles ran to miles Walked is 8:5

Thus, we can obtain the miles ran by Nash in the 5th week as follow:

Ratio ran = 8

Ratio walked = 5

Total ratio = 8 + 5 = 13

Miles per week for training = 26 mile

Mile ran in the 5th week = 8/13 × 26

Mile ran in the 5th week = 8 × 2

Mile ran in the 5th week = 16 miles

Therefore, Nash ran 16 miles in the 5th week of training.

A financial transaction that is added to a ledger balance is called a credit
Please select the best answer from the choices provided
OT
OF

Answers

Answer:

OT

Step-by-step explanation:

added to so true

Answer:

true

Step-by-step explanation:

A truck can be rented from Company for 50 dollars a day plus 0.50 per mile. Company B charges 30 dollars a day plus 0.90 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for company A and company B are the same.

Answers

Answer:

no company a gets 3 miles company b gets 5 miles

Step-by-step explanation:

Find a ratio that is equivalent to 9 to 15

Answers

81:225 would be another ratio that is equavalient.

The required equivalent ratio of the given ratio is 3/5.

Given that,
The ratio that is equivalent to 9 to 15 is to be determined.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

What is the Ratio?

The ratio can be defined as the proportion of the fraction of one quantity towards others. e.g.- water in milk.

Here,
Mentioned ration,
= 9 / 15
Reducing the expression by eliminating the common factors
= 3 / 5

Thus, the required equivalent ratio of the given ratio is 3/5.

Learn more about ratios here:

brainly.com/question/13419413

#SPJ2

A jug contains 20 3/8 cups of lemonade. If you are serving guests at a summer picnic, how many glasses can you fill if each guest gets 1 1/2 cups of lemonade?

Answers

Answer:

13 glasses

Step-by-step explanation:

Given:

Amount of of lemonade available = 20⅜ cups

Amount of lemonade per guest = 1½ cups

Required:

Number of glasses to be filled

SOLUTION:

Number of glass to be filled = amount of lemonade available ÷ amount of lemonade per guest

= 20⅜ ÷ 1½

Change both mixed fractions to improper fractions

= [tex] \frac{163}{8} [/tex] ÷ [tex] \frac{3}{2} [/tex]

Flip the fraction on your right upside down and change the division to multiplication

[tex] = \frac{163}{8} * \frac{2}{3} [/tex]

[tex] = \frac{163*2}{8*3} [/tex]

[tex] = \frac{163*1}{4*3} [/tex]

[tex] = \frac{163}{12} = 13.58 [/tex]

Number of glasses that would be filled is roughly 13 glasses.

Is this correct as well?

Answers

Answer:

yes it is

Step-by-step explanation:

Using exponents, what is the simplified form of 12x 6x7 оа 23 Ob 2x3 ос 63 6x 6x3​

Answers

12x^5 / 6x^2 = 2x^3

Answer choice B is correct.

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