A high school teacher collected the final test scores of students in her Honors United States History course. She found that the scores were normally distributed with a mean of 70 and a standard deviation of 10. What percentage of her students passed the exam with a score of 60 or above

Answers

Answer 1

Answer:

0.84134

Step-by-step explanation:

Given that:

Mean, m = 70

Standard deviation, s = 10

P(x ≥ 60)

Obtain the standardized score (Zscore) :

Z = (x - m) / s

Z = (60 - 70) / 10

Z = - 10 / 10

Zscore = - 1

P(Z ≥ 1) = 0.84134 (Z probability calculator)


Related Questions

Help ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

What

Step-by-step explanation:

U need to let people know what ubneed helo for


What is the sum of the 11th square number and the 2nd cube number?

Answers

Answer:

11

Step-by-step explanation:

The answer is "129", and further calculation can be defined as follows:

Given:

Sum of 11th square number and 2nd cube number.

To find:

sum=?

Solution:

Sum of 11th square number and 2nd cube number.

Calculating the square and cube value:

[tex]\to \bold{11^2= 11\times 11=121}\\\\\to \bold{2^3=2\times 2 \times 2= 8}[/tex]

Calculating the sum:

[tex]\bold{Sum=121+8=129}[/tex]

Learn more:

brainly.com/question/24794359

In a 33' by 69.7' room, what is the diagonal length from corner to corner along the floor?

Answers

Answer:

77.12 feets

Step-by-step explanation:

In a 33' by 69.7' room, what is the diagonal length from corner to corner along the floor?

Step one:

given data

Length of the room= 33 feets

width of the room = 69.7 feets

Required

The diagonal of the room

Step two:

from Pythagoras theorem

z^2= x^2+y^2

substitute

z^2= 33^2+ 69.7^2

z^2=1089+4858.09

z^2=5947.09

z=√5947.09

z=77.12 feets

Jason purchased 3 items at the same price and 1 item for $3.75. What was the individual price of the 3 items if Jason's total was $19.80 before tax?

Answers

Answer: $5.30/one of the 3 items
Explanation:
$19.80-3.75=16.05
16.05/3 = 5.35

In a taste test of new ice creams invented at moo university 750 freshman preffed cranberry bog ice cream, while 1,250 freshmen preferred coconut orange ice cream

The fraction of freshmen who preferred cranberry bog is...

Answers

Answer:

[tex] \frac{3}{8} [/tex]

Step-by-step explanation:

First, you add up the amount of students.

[tex]1250 + 750 = 2000[/tex]. Now, you take 750 (crabwrey bog) and divide it by 2000 (the total). Keep simplifying until you can't anymore.

[tex] \frac{750}{2000} = \frac{75}{200} = \frac{15}{40} = \frac{3}{8} [/tex]

So the fraction of students who preferred cranberry bog is

[tex] \frac{3}{8} [/tex]

Answer:

750/2000

Step-by-step explanation:

1250+750=2000 and the focus is cranberry bog so 750/2000 is the answer

"Nine times the quantity of three less than double a number"

Answers

Answer:

21

Step-by-step explanation:

3×9=27

27-6=21

u do 9× 3 (nine times the quantity of three) is 27 then 3 less then double a number so u take 27 - 3x2= 6 (27-6) an it gives u 21

Answer:

21

Step-by-step explanation:

9×3=27

3×2=6

27-6=21

Write the answer with the correct number of significant digits. Don't use any commas in your answer. Only use a
decimal point in your answer if it is necessary to show the correct number of significant digits.
386 x 21 =

Answers

8106 i hope this helped i didn’t put any commas

The side lengths of a triangle are 6, 8, and 10. Is this a right triangle?

Answers

The answer is C












Sorry I need to make this 20 characters long:/

What is the height of the trapezoid?
The area of the trapezoid is 40 square units.
6
h
O 3 units
O 5 units
O 10 units
O 12 units
10

Answers

Answer:

the answer is 5 I had to have 20 characters So imma put this

START

Step-by-step explanation:

its 5 units

PLEASE HELP I WILL GIVE BRAINALIST

Answers

Answer:

They each paid $40

Step-by-step explanation:

please give brainliest

What is the value of the expression below when y = 9 and z = 3?

10y – 7z

Answers

10(9) - 7(3)
90- 21
69

Sally's investment of £450 has gone up by 30 percent, while susie's investment of £650 has gone done by 10 percent.Who now has the larger amount of money

Answers

Answer:

Neither, they have the same amount now?

Step-by-step explanation:

Sally = £450 = 100%

Gone up by 30% so 100% + 30% = 130% = 1.3

£450 x 1.3 = £585

Susie = £650 = 100%

Gone down by 10% so 100% - 10% = 90% = 0.9

£650 x 0.9 = £585

The only feelings needed are sad and mad. Prove me wrong

Answers

Answer:

ur not wrong tho dang bcs those are like our main emotions sad and mad

You need happiness for your mental health!

17.95x + 24 = 18.95x + 18
what is the solution

Answers

The solution equals to x=6 because

17.95x-18.95x+24=18

17.95x-18.95x=18-24

-x=18-24

-x=-6

X=6, is your answer

The solution for the given equation is x=6.

The given equation is 17.95x + 24 = 18.95x + 18.

What is an equation?

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

The solution of an equation is the set of all values that, when substituted for unknowns, make an equation true.

Now, 17.95x + 24 = 18.95x + 18

⇒ 18.95x-17.95x=24-18

⇒ x=6

Hence, the solution for the given equation is x=6.

To learn more about an equation visit:

https://brainly.com/question/14686792.

#SPJ2

Whats the arc length if there is a radius of 5, and an angle of 110 degrees




ANSWER ASAP!!!

Answers

Answer:

Multiply the area by 2 and divide the result by the central angle in radians.

Find the square root of this division.

Multiply this root by the central angle again to get the arc length.

The units will be the square root of the sector area units.

Check your result with Omni Calculator.

Step-by-step explanation:

nvm listen to the guy above me

Help me anyone??? Would be nice!

Answers

The answer is point m.

Answer: Point z is the best answer

Which concluding statement restates the argument’s claim?
The Williard family was saving up for their summer vacation. Mrs. Williard had $475.88 in their savings account for the trip. Mr. Williard received a bonus at work for $609.00 that he is saving for the trip. If the trip will cost the Warren's a total of $1675.98, how much more money do they need for their vacation?
PLS ANSWRER ASAP

Answers

Answer:

they need $590.1

Step-by-step explanation:

Mrs. Willard already had $475.88 in her savings account. Mr. Willard then received a bonus of $609.00, adding the amounts together would give a total of $1084.88

Since the Willards need $1675.98 for their vacation, subtract $1084.88 from the needed amount, i.e $1675.98-$1084.88

Answer:

591.10

Step-by-step explanation:

hope this helps :D

Find the volume of the prism.

Answers

Answer:

102

Step-by-step explanation:

first you have to multiply 8 by 12 and then add the some with the leftover number

Escherichia coli is a prokaryotic bacterium. How will Escherichia coli reproduce? A. binary fission B. budding C. mitosis D. regeneration?

Answers

Answer:

A. binary fission

Step-by-step explanation:

Escherichia coli is a prokaryotic bacterium. Escherichia coli reproduce asexually by binary fission. While Escherichia coli is undergoing binary division, the process starts with elongation of the cell. Two similar copies of the bacteria is then replicated followed by the formation of a septum.

which statmen is true about the slope of the line rt​

Answers

D. The slope is the same between any two points because it is linear.

jim can paint 5 chairs with 11.3 gallons of paint how many chairs can he paint with 24.86 gallons​

Answers

Jim can paint 11 chairs. if 5 chairs is 11.3 then 10 chairs are 22.6 and if you want to know how much is on 24.86 you divide 11.3 with 5 because then you can add with 1 chair at a time which is 2.26 and then you add 2.26 which is exactly 24.86. 5+5+1 is 12.


5 chairs=11.3
10 chairs=22.6
11 chairs=24.86

Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x=16...
y=7 when x=2

Answers

Step-by-step explanation:

y = kx, where k is a real constant.

When x = 2, y = 7.

=> (7) = k(2), 2k = 7, k = 3.5.

Therefore when x = 16,

y = (3.5)(16) = 56.

The value of y is 56 when x is 16.

The formula for direct variation is y = kx

Using the known x and y solve for k:

7 = k2

Divide both sides by 2:

k =7/2 = 3.5

Now solve for y when x = 16:

y = 3.5(16)

y = 56

Simplify: -2(-4-7b) + 10b

Answers

Answer:

8+24b

Step-by-step explanation:

Answer:

2(12b+4)

Step-by-step explanation:

-2(-7b-4)+10b : Rearrange the expression

2 : Find the greatest common factor of the terms.

-2(-7b-4)+10b : Focus on

2(7b+4+5b) : Factor out the greatest common factor

2(12b+4) : Simplify

Hope that helps

Helpppp plssssss and thxxx

Answers

Answer:

x ≤ 13

Step-by-step explanation:

hope this helps

To even it out and isolate the x you must add 4 to both sides:

-4 + x ≤ 9
+4 +4

This cancels out the -4 on the left side, and when adding 4 and 9 on the right side you end up with:

x ≤ 13

The dollar general sales hand towels in sets of 12 and bath towels in sets of 4 if the store sold the same number of each type of towel. what is the smallest number of sets of each type of towel that the store most have sold?​

Answers

one hand towel set and three bath towel sets

Ski rentals are $100 plus $18 per hour, as shown in the table above.

1. Write an equation that represents this data using function notation. Let x represents the time in hours and f (x) represents the rental cost.

2. What would be f (6)? Show your work.

3. If f (x) = 235, what is x? Show your work.

BE SURE TO LABEL YOUR RESPONSES 1, 2, AND 3.

Answers

Answer:

1. f(x)=18X +100

2:108

3. 7.5

Step-by-step explanation:

Answer:

-i

Step-by-step explanation:

Can anyone help? Would appreciate it a lot for both these questions!

Answers

Answer:

h = √65, length of diagonal = √117

Step-by-step explanation:

1) FE = DC since △FEA congruent to △CBD. Therefore FE per say  = 23-15/2 = 4.   Respectively we can find height "AE" using Pythagorean theorem;

AE = √(9)^2-(4)^2 = √81-16  = √65 units

h = √65

2) The diagonal of this rectangle forms two smaller triangles, each of which have legs of length 4 + 2 & 4 + 4 respectively. Use Pythagorean Theorem and determine the length of the diagonal;

Legs =  6 & 8

6^2 +9^2 = diagonal^2,

length of diagonal = √6^2 + 9^2

                               = √117 units

diagonal = √117

2) Gold has a density of
19.3g/cmº. The gold ring has a
mass of 15g. Work out the
volume of the gold in the ring?

Answers

Answer:

V = 150/193 cm³

Step-by-step explanation:

Density = Mass/Volume

Substitute the given values into the equation.

19.3 = 15/V (Given)

19.3V = 15 (Multiplied V on both sides)

V = 150/193 (Divided 19.3 on both sides)

DE
Question 5 of 10
In the diagram below, BD is parallel to XY. What is the value of x?
60"
xo
A. 60
B. 40
Ο Ο Ο Ο
C. 30
D. 120
PREVIOUS

Answers

Answer:

A.

60

hope it helps :)

help me plz !!!!!!!!!!​

Answers

Answer:

The answer is b. 72.3cm

Step-by-step explanation:

11.5cm is the radius

To find the circumference multiply the radius by 2 then multiply it again by 3.14

3.14 is the beginning of pi.

e.g - 2 × 3.14 x 11.5

Answer:

B. 723cm

step by step explanation

circumference of a circle= 2πr

π= 3•142

r= 11•5

2×3•142×11.5

= 72•26

~ 72•3cm

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