A set of biology exam scores are normally distributed with a mean of 70 points and a standard deviation of six points X equal the score on a randomly selected exam from the set find P(X< 73)

Answers

Answer 1

Answer: .69

Step-by-step explanation:

Answer on khan

Answer 2

We can write the value in the range P(64 < {x} < 76) as 0.68.

What is standard deviation?

In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values.

Given is that a set of biology exam scores are normally distributed with a mean of 70 points and a standard deviation of six points X equal the score on a randomly selected exam from the set.

It is given that -

μ = 70

σ = 6

For the range of {x}, we can write -

(μ - σ) < {x} < (μ + σ)

64 < {x} < 76

We can write the range of {z} value as -

(64 - 70)/6 < {z} < (64 + 70)/6

- 1 < {z} < + 1

Now -

P(64 < {x} < 76) = P(x < 76) - P(x < 64) = 0.84 - 0.15 = 0.68

Therefore, we can write the value in the range P(64 < {x} < 76) as 0.68.

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Related Questions

A number decreased by fourteen is equal to eighteen

Answers

Answer: 32

Step-by-step explanation:add 14 to 18

Answer:

32

Step-by-step explanation:

32 is the answer because 18 plus 14 equals 32. And so the number 32 decreased by 14 is 18.

x varies inversely as y/z.x=27 when y=9 and z=2​

Answers

Answer:

y/z.x= 27

x=27.2/9

x=6

answer of it

A chef has some broccoli, cauliflower, carrots, and squash to make a vegetarian dish. List the possibal combinations if he uses only 3 vegetables in the dish.​

Answers

Answer:

the chef could make a casserole, sou, and veggie burger

Step-by-step explanation:

soup, roasted vegetables, vegetable medley, pan fried vegetables, casserole

plz help
there are 4 grams of fiber in 1/2 cup of oats how many grams of fiber are in 3 1/2 cups of Oats ​

Answers

Answer:

28 Grams

Step-by-step explanation:

each half cup is 4 Grams and you have 3 and a half cups so you take 3x2 which is 6 and then you do 6x4 which is 24 and you add another 4 cause of the extra half. hope this helps. :)

y= 3x – 6
y = -x + 2
Plot two lines by clicking the graph.

Answers

Answer: x=−2/17 and y=−6/17 look at the picture

Step-by-step explanation: hope this help :)

apple watch costs $325. There is an 8% sales tax rate. What is the total amount of tax in dollars and cents?

Answers

Answer:

$26.00

Step-by-step explanation:

no explination :D

Answer:

the tax would be 26

Step-by-step explanation:

-4x-12<12 this is equations and inequalities and I really need help LOL

Answers

Answer:

[tex]x>-6[/tex]

Step-by-step explanation:

[tex]-4x-12<12[/tex]

[tex]-4x-12+12<12+12[/tex] (Add [tex]12[/tex] to both sides of the inequality to isolate [tex]x[/tex])

[tex]-4x<24[/tex] (Simplify)

[tex]\frac{-4x}{-4}<\frac{24}{-4}[/tex] (Divide both sides of the inequality by [tex]-4[/tex] to get rid of [tex]x[/tex]'s coefficient)

[tex]x>-6[/tex] (Simplify, don't forget to flip the sign of the inequality when multiplying or dividing by a negative number)

Hope this helps!

what is 0.0402 as a percent

Answers

Answer:

4.02%

Step-by-step explanation:

0.0402×100=4.02%

Answer:

4.02%

Step-by-step explanation:

Need help ASAP!! Find the mid-point of the hypotenuse.

Answers

Step-by-step explanation:

Midpoint of Hypotenuse

= [(0 + n)/2, (n + 0)/2]

= (n/2, n/2) or (0.5n, 0.5n).

PLZZZ HELP ME!
help me

Answers

Answer:

1. 1/3

2. 4/9

3. 5/8

Step-by-step explanation:

1. 3/6 - 1/6 = 2/6 = 1/3

2. 7/9 - 3/9 = 4/9

3. 7/8 - 2/8 = 5/8

PLZZZ HURRY!

Cassie has a wood board that is 34 foot long. She wants to cut the board into pieces that are 18 foot long. Which expression will help Cassie find how many pieces she can cut?

A. 34−18

B. 34÷18

C. 18⋅34

D. 18÷34

Answers

Answer:

B

Step-by-step explanation:

The answer is 3/4 divided by 1/8

PLEASE HELP ME!! I will mark you branliest

Answers

Answer:

10

Step-by-step explanation:

The perimeter of one side (RS) is 4, while the other (QS) Is slightly longer. Round it to 4. And the last side (QR) is half the size of the first side (RS)

Therefore, the answer should be 10

If ∠ G is supplementary to ∠ H and the measure of ∠ G is 65 ° what is the measure of ∠ H ?
Please help

Answers

Supplementary angles add up to = 180 degrees...so G + H = 180. To find H, subtract G from 180.
180 - 65 = 115
So angle H = 115 degrees

Measure of ∠H = 115°

What are supplementary angles?

Two angles are called supplementary when sum of their measures is 180 degrees.

Given,

∠G is supplementary to ∠H

∠G is 65 °

∠G + ∠H = 180°

65° + ∠H = 180°

∠H = 180° - 65°

∠H = 115°

Hence, 115° is measure of ∠H .

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What number is 45% of 580?

Answers

Answer:

261

Step-by-step explanation:

580(0.45)= 261 so the answer is 261

Jamal drew a picture.
8 cm
4 cm
What is the area of the picture Jamal drew? Enter the answer in the box.

Answers

area of rectangle = l×b

So, area of drawing = l×b = 8cm×4cm = 32cm²

PLEASE Help mE wiTh the two QUESTIONS

Answers

Answer:

the coefficient 2 is the slope (each coordinate is 2 units up and 1 unit right from the previous unit)

the constant 3 is the y-intercept (0, 3)

Step-by-step explanation:

PLEASE HELP ON ALL, I WILL MARK BRAINLY

Answers

Step-by-step explanation:

4.

3pounds for $6.99

a.

1 pounds =$6.99/3=$2.33

b.

10 pounds =10×$2.33=$23.3

10.

area right triangle =1/2 bh=1/2 ×{50×30}=750mm²



Write an equation where a number is added to a variable, and a solution is -8.

Answers

Answer:

-2 -  -10

Step-by-step explanation:

Please help me it’s due today

Answers

Answer:

1.) slope=6/2 or 3 y-int =2 equation = y=3x+2

2.) slope = -10/1 or -10 y-int = 60 euation = y=-10x+60

Step-by-step explanation:

Slope is rise over run

y-intercept is when x =0

equation is y=mx+b

m=slope and b=y-int

‼️‼️Pls Help this is due soon and I will give brainliest to first answer‼️‼️

Which problem will graph as shown
A) -17 < 3 - 5x
B) 17 > 3 - 5x
C) 17 ≥ 3 - 5x
D) 17 ≤ 3 - 5x

Answers

Answer:

The answer is A!

Choose the graph of y = -3x – 1

Answers

Answer:

The line on the graph below is my answer.

The graph of function y = -3x – 1 has been drawn below.

How to plot a graph?

A graph is a diagram that shows the fluctuation of one variable in relation to one or more other variables.

In order to plot the graph, we need to find out y's values corresponding to x's value

After that, we need to substitute the values of x's and y's into the coordinate geometry.

Given the line equation  y = -3x – 1

At x = 0 ⇒

y = -3(0) - 1

y = -1

So,

A(0,-1) is the first point on the line.

At y = 0 ⇒

0 = -3x – 1

x = -1/3

So,

B(-1/3,0) is the second point on the line.

Hence "The graph of function y = -3x – 1 has been drawn below".

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Helpppp me plzzzzzzzzzz

Answers

Answer:

it is correct

Step-by-step explanation:

trust ur gut

Answer:

you have to correct answer

Step-by-step explanation:

just convert the square roots and fractions to whole numbers and then put them from least to greatest

You are working on decorating your home for the holidays. You enjoy hanging lights and so far have invested in $75 worth of lights. You notice a sale that you can get strands of lights for $5 a box this week. Write an expression that describes your total investment (money spent) in lights, depending on how many boxes (b) you buy.

Answers

Answer:

Step-by-step explanation:

i=75+5b

The expression that describes the total investment(money spent) in light is 75+ 5(b)

What are word problems?

Word problems require the application of algebraic expression in solving real-life problems. It can be expressed with the use of variables and arithmetic operations.

From the given information:

The amount of money invested on lights = $75If a box (b) cost = $5

The total investment spent in light = 75 + 5b

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(Need help ASAP) In a research experiment, the population of a colony of bacteria doubles every hour. The population, f(x), of the colony after x hours can be modeled by the function f(x)=25 ⋅ 2x. What values for the domain are reasonable in the given context?



1. all real numbers



2. all real numbers greater than 0



3. all real numbers greater than or equal to 0



4. all real numbers greater than or equal to 25

Answers

Answer:

Step-by-step explanation:

The answer is 3

The reasonable domain is all real numbers greater than or equal to 0.

What is domain?

The collection of all conceivable independent values that a function or relation may take is known as its domain.

Given:

In a research experiment,

the population of a colony of bacteria doubles every hour.

Here, we can use exponential growth function.

The population, f(x), of the colony after x hours can be modeled by the function f(x)=25 ⋅ 2ˣ.

The value of x can not be negative because it represents time.

The domain of the function is all achievable values.

So, the domain is  all real numbers greater than or equal to 0

Therefore, the domain is all real numbers greater than or equal to 0.

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Find d.
Please explain if you know, thank you so much.

Answers

Answer: D is 8

Step-by-step explanation: nothing

Answer:

Step-by-step explanation:

the triangle is a 30º-60º-90º triangle, there's a formula for the sides of this type of triangle which I will attach

x = d

9 = x√3

9/√3 = x

x = 3√3

d = 3√3

HELP HELP HELP HELP FAST

Answers

Answer:

[I didn't do it right]

Step-by-step explanation:

[Deleted since it has been said to be wrong and I would not like to spread misinformation]

What is the to m(3 +m)

Answers

Answer:

3m+m^2

Step-by-step explanation:

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Enter the number that makes the equation true

Answers

Answer:

8.1

Step-by-step explanation:


Number 2 is the question

Answers

Answer:

C:2 gallons per minute

Step-by-step explanation:

Answer:

The answer is two gallons per minute.

Step-by-step explanation:

The gallons are always double the minutes. This means that there are 2 gallons per minute.

13. How many square feet of flooring
are needed to
cover the entire floor of Bedroom 1?

Answers

Answer:

8 feet squared

Step-by-step explanation:

The area of bedroom 1 is 2 length and 3 width. multiply them and you get 6ft^2 plus the 2 squares on the right.

The area of Bedroom 1 is,

⇒ 32 feet²

What is mean by Rectangle?

A rectangle is a two dimension figure with 4 sides, 4 corners and 4 right angles. The opposite sides of the rectangle are equal and parallel to each other.

Given that;

To find square feet of flooring are needed to cover the entire floor of Bedroom 1.

Here, We have;

1 in = 4 feet

Hence, Length of bedroom 1 = 8 feet

Width = 4 feet

Thus, The area of Bedroom 1 is,

⇒ 8 x 4 = 32 feet²

Hence, The area of Bedroom 1 is,

⇒ 32 feet²

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