Assume that blood pressure readings are normally distributed with a mean of 117 and a standard deviation of 9.6. If 144 people are randomly selected, find the probability that their mean blood pressure will be less than 119.

Answers

Answer 1

Answer:

0.9938

Step-by-step explanation:

Let mean blood pressure be = x

Pr ( x < 119 ) can be found using ' z value ' = ( x - u ) ÷ ( s / √n ) ; where                x = 119 , u = mean = 117 , n = no. of sample items = 144 , s = standard deviation = 9.6

z = (119 - 117) ÷ (9.6 / 144) = -2 ÷ (9.6 / 12)  = -2 / 0.8 → z = 2.5

Pr (x < 119) = P (z <  2.5)

P = 0.9938


Related Questions

He ido al supermercado y he comprado 2 tarros de café de 250 gr. y 3 kilos de azúcar. por todo esto pagué $4500, la semana anterior fui al mismo supermercado y compré los mismos productos , pero 4 tarros de café y kilos de azúcar y cancelé $ 6800. ¿ Cuánto cuesta 1 tarro de café y 1 kilo de Azúcar?

Answers

Translate this to english and I can help you then

Answer:

english

Step-by-step explanation:

‎I went to the supermarket and bought 2 jars of coffee of 250 gr. and 3 kilos of sugar. for all this I paid $4500, the week before I went to the same supermarket and bought the same products, but 4 jars of coffee and kilos of sugar and canceled $6800. How much does 1 jar of coffee and 1 kilo of Sugar cost?‎

Which equation represents a line that is parallel to the y-axis?

Answers

The answer i got was c

please help me

Find YZ

Answers

Answer:

blah

Step-by-step explanation:

blah

A card is drawn randomly from a standard 52-card deck. Find the probability of the given event.
(a) The card drawn is 5
(b) The card drawn is a face card (Jack, Queen, or King)
(c) The card drawn is not a face card.

Answers

Answer:

a). 1/13

There are 4 5s. so 4/52

b). 3/13

12 total jack, king, and queen. 12/52

c). 15/26

30 cards are not face cards so 30/52

A school's art club holds a bake sale on Fridays to raise money for art supplies. Here are the
number of cookies they sold each week in the fall and in the spring:
fall
20
26
25
24
29
20
19
19
24
24
spring
19
22
29
21
125
22
26
21
25
25
a Find the mean number of cookies sold in the fall and in the spring
Fall
Spring

Answers

Answer:

Fall - 23 Spring - 24

Step-by-step explanation

Aisha is cleaning her fish tank, which has a volume of 2082.5 inches. After cleaning the fish tank, Aisha will refill it with water, If one gallon of water is equivalent to 231 inches, about how many gallons of water are needed to fill the tank.

Answers

Answer:

9.01515151515 (Repeating decimal) (Or 9 and 1/66)

Step-by-step explanation:

Divide 2082.5 with 231.

Answer:

10 or 11

Step-by-step explanation:

En una sociedad participan 5 socios, colocando todos capitales iguales, lo unico que el primer socio estuvo 1 año y medio, el segundo 9 meses, el tercero 5 meses mas que el primero, el cuarto 1 año 7 meses y el quinto 2 años. ¿Cuanto le toca a cada socio de una utilidad de Q. 55,230.00?

Answers

Answer:

Socio 1 recibirá Q. 10,690, Socio 2 recibirá Q. 5,345, Socio 3 recibirá Q. 13,655, Socio 4 recibirá Q. 11,285 y Socio 5 recibirá Q. 14,255.

Step-by-step explanation:

Dado que en una sociedad participan 5 socios, colocando todos capitales iguales, lo único que el primer socio estuvo 1 año y medio, el segundo 9 meses, el tercero 5 meses mas que el primero, el cuarto 1 año 7 meses y el quinto 2 años, para determinar cuánto le toca a cada socio de una utilidad de Q. 55,230.00 se deben realizar los siguientes cálculos:

Socio 1 = 1.5 años

Socio 2 = 0.75 años

Socio 3 = 1.916 años

Socio 4 = 1.583 años

Socio 5 = 2 años

Total = 1.5 + 0.75 + 1.916 + 1.583 + 2 = 7.75

Socio 1 =

7.75 = 100

1.50 = X

1.50 x 100 / 7.75 = X

19.35 = X

55,230 x 0.1935 = 10,690

Socio 2 =

7.75 = 100

0.75 = X

0.75 x 100 / 7.75 = X

9.68 = X

55,230 x 0.0968 = 5,345

Socio 3 =

7.75 = 100

1.916 = X

1.916 x 100 / 7.75 = X

24.72 = X

55,230 x 0.2472 = 13,655

Socio 4 =

7.75 = 100

1.583 = X

1.583 x 100 / 7.75 = X

20.43 = X

55,230 x 0.2043 = 11,285

Socio 5 =

7.75 = 100

2 = X

2 x 100 / 7.75 = X

25.81 = X

55,230 x 0.2581 = 14,255

Por lo tanto, Socio 1 recibirá Q. 10,690, Socio 2 recibirá Q. 5,345, Socio 3 recibirá Q. 13,655, Socio 4 recibirá Q. 11,285 y Socio 5 recibirá Q. 14,255.

You transform the point (-8, 4) by rotating it 180 degrees
around the origin. What are the coordinates of the new
point?

Answers

Answer:

(8 , -4)

Step-by-step explanation:

____________________

The new coordinate after rotating it 180 degrees around the origin will be;

⇒ (8, - 4)

What is Translation?

A transformation that occurs when a figure is moved from one location to another location without changing its size or shape is called translation.

Given that;

The point is,

(- 8, 4)

And, It rotating it 180 degrees around the origin.

Now,

The rule of the transformation to rotating it 180 degrees around the origin is;

(x, y) ⇒ (- x, - y)

Thus, The new point after rotating it 180 degrees around the origin is,

(- 8, 4) = (8, - 4)

Therefore, The new coordinate after rotating it 180 degrees around the origin will be;

⇒ (8, - 4)

Learn more about the translation visit:

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Jess stopped at an ATM location to deposit 2 one hundred-dollar bills and checks for $474.85 and $321.15. He received $50.00 in cash. Find the total deposit. *

Answers

Step 1: Add the deposit and checks together
$200
+ $474.85
+ $ 321.15
= $996.00

Step 2: Subtract cash back from the total result found
996.00
- 50.00
= $946.00

The total deposit is $946.00.


Help PLZZ no files
Bobby wants to determine the most popular snack for the students at his school.
Which question would be the BEST question to get statistical data?
А
What is your favorite snack food?
B
Will you eat a snack after school today?
С
Do you eat more than one snack a day?
D
Would you rather have chips or cookies for a snack?

Answers

Answer:

A. What Is your favorite snack food?

Breinor needed some school supplies to finish out the year. His mom bought him a 3-pack of pens for $3.59, a pack of highlighters for $5.15, and two notebooks for a $1.99 each. The sales tax is 8%. What was the total price she paid including tax? $12.72
$12.72

$13.74
$13.74

$10.73
$10.73

$11.59

Answers

Answer:

13.74

Step-by-step explanation:

3.59+5.15+1.99+1.99=12.72 total without tax

12.72x1.08 (includes 8% sales tax)=13.74

I NEED HELP ON THIS PROBLEM QUICKLY PLEASE AND THANK YOU

Answers

Try looking it up on the app called socratic and you just might find it

3sin²x-2cos²x=5sin²x-2​

Answers

Answer:

L.H.S.3sin²x-2cos²x3sin²x-2(1-sin²x)3sin²x-2+2sin²x5sin²x-2R.H.S proved

Step-by-step explanation:

Note:

we have

sin²x+cos²x=1

replacing it

cos²x=1-sin²x

[as we need sin on right hand side.]

What are the coordinates for that point what’s the x,y

Answers

Answer: Sprint=y=50x+150 Verizon=y=150x+50

Step-by-step explanation:

you roll a six sided die two times. What is the probability of rolling a 4 then rolling a 2?

Answers

Answer: 1/36

Step-by-step explanation:

Rolling a 4: 1/6 (one favorable outcome, six possible outcomes)

Rolling a 2: 1/6 (one favorable outcome, six possible outcomes)

1/6*1/6 = 1/36

What is the probability of a person randomly selecting a cheesecake, putting it back, and then selecting a cookie? out of 10 desserts in total

Answers

1/10 is the answer —————-

If 2/3x -1 = 4, then x=

Answers

Answer:

15/2

Step-by-step explanation:

2/3x-1=4

2/3x=4+1

2/3x=5

x=5/(2/3)

x=(5/1)(3/2)

x=15/2

What is 3(4x−8) in simplified form?

7x−11

12x−8

12x + 24

12x−24

Answers

12x-24
Explain: 3(4x-8) —> 3*4x= 12x. 3*-8= -24
Therefore: 12x-24

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\boxed{\mathsf{3(4x - 8)}}\\\huge\text{DISTRIBUTE 3 WITHIN the PARENTHESES}\\\huge\boxed{\mathsf{= 3(4x) + 3(-8)}}\\\huge\boxed{\mathsf{= 12x - 24}}\\\\\huge\boxed{\textsf{Answer: Option D. \bf 12x - 24}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Hello anyone mind to help

Answers

Answer:

c

Step-by-step explanation:

so you would have -12 as the lowest, then climb to 0, then climb to the greatest number

Answer:

its c

Step-by-step explanation:

Need help with this problem

Answers

Answer:

Step-by-step explanation:

50+70=120

180-120=60

I'm pretty sure the answer is 60

Write the equation in point-slope form of the line that passes through (1, 4) and has a slope of 4/3

Answers

Answer:

y - 4 = (4/3)(x - 1)

Step-by-step explanation:

point slope form is

y - y1 = m(x - x1)

m is the slope

(x1, y1) is a point on the line

----------------------------

for m = 4/3 and (x1, y1)  = (1, 4)

y - 4 = (4/3)(x - 1)

An office upgrades its internet speed from 10^4 bits per second to 10^8 bits per second. How many times greater is the new internet speed?

Answers

10000 times greater
10^4 is 10000
And 10^8 is 100000000

Work out the mean for the data set below: 504, 508

Answers

Answer:

504 + 508 = 1012

Mean = 506

Step-by-step explanation:

Pls pls helppp I’ll mark you brainliestttt

Answers

The answer is 16 miles

What is the lateral surface area, in square inches, of the figure formed by the net?

Answers

Answer:

71 in²

Step-by-step explanation:

surface area = (4×6)+(2×½×4×5)+(2×½×6×4.5)

= 24+20+27 = 71 in²

Nora made 3 gallons of lemonade. How much is that in pints

Answers

Answer:

24 pints because. 8 pints in each gallon

Answer:

24 pints

Step-by-step explanation:

There are 8 pints a gallon so if you simply multiply 3 by 8 you get 24 and 24 pints is your answer.

Have a good day and here’s a funny comic just for fun!

Can you Solve this?
IF AT=4 CAT=6 CROW=8 BRAIN=10

TWISTER = ?

Answers

the answer is 14 there just adding an extra letter each time twister has 7 letters

The value of the TWISTER is 14.

What is multiplication?

Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given:

AT=4

CAT=6

CROW=8

BRAIN=10

From the arrangements,

The number  = 2 x (The number of words)

So, the word TWISTER has 7 words.

Substituting the value,

The number  = 2 x (The number of words)

The number  = 2 x (7)

The number = 14.

Therefore, the required number is 14.

To learn more about the multiplication;

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Which two teams have the same ratio of wins to losses?

Answers

Answer:

Lightning and Eagles

Step-by-step explanation:

14:7 can be rewritten as 2:1 (Factor out 7)

12:6 can be rewitten as 2:1 (Factor out 6)

Both are 2:1

-- Gage Millar, Algebra 2 Tutor

Answer:

D.

Step-by-step explanation:

when you simplify 14:7 you get 2:1 and if you do the same to eagles(12:6) you will get the Same answer( 2:1 )as lightning

which one is less than 6/25 and 3/10

Answers

Answer:

6/25

Step-by-step explanation:

3/10 is greater than 6/25

Find the circumference use 3.14 for pie

Answers

Answer:

31.4 is the answer......

Step-by-step explanation:

d=2×r2×510cm

circumference=πd

3.14×1031.4 cm

stay safe healthy and happy.
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