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2 years ago

Find the mean for the following group of data items. 175, 115, 145, 115, 135

Mathematics

1 answer:

leva [86]2 years ago

4 0

Answer:

137

Step-by-step explanation:

175+115+145+115+135= 685

685÷5= 137

To put that into words you add up all the numbers and divide the sum by how many numbers there are.

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To graduate this semester, you must pass Statistics 314; and you estimate that you have an 85% chance of passing. You need to pa

Nitella [24]

Answer:

Probability of graduating this semester is 0.7344

Step-by-step explanation:

Given the data in the question;

let A represent passing STAT-314

B represent passing at least in MATH-272 or MATH-444

M1 represent passing in MATH-272

M2 represent passing in MATH-444

C represent passing GERMAN-32

now

P( A ) = 0.85, P( C ) = 90, P( M1 ) = P( M2 ) = 0.8

P( B ) = P( pass at least one of either MATH-272 or MATH-444 ) = P( pass in MATH-272 but not MATH-444 ) + ( pass in MATH-444 but not in MATH 272) + P( pass both )

P( B ) = P( M1 ) × ( 1 - P( M2 ) ) + ( 1 - P( M1 ) ) × P( M2 ) + P( M1 ) × P( M2 )

we substitute

⇒ 0.8×0.2 + 0.2×0.8 + 0.8×0.8 = 0.16 + 0.16 + 0.64 = 0.96

∴ the probability of graduating this semester will be;

⇒ P( A ) × P( B ) × P( C )

we substitute

⇒ 0.85 × 0.96 × 90

⇒ 0.7344

Probability of graduating this semester is 0.7344

6 0

2 years ago

A local chicken farmer is constructing a set of eight pens to cage his chickens as shown in the diagram below. He has decided to

Vilka [71]

Primary equation: A(x)= (5y)(3X)
Secondary equation: 5y+3X=1000
y=200-(3X)/5
A(x)=3X(1000-3X)
A(x)=3000X-9X²

Now, find the derivative of A(x) to find the max... here's the work for that, or you could guess and check.

A'(x)=3000-18X

Set derivative equal to 0

0=3000-18X
166.6666666=X

Now test the intervals

(0,166.6666) (166.66666, 1000)
1st derivative is + 1st derivative is -

Plug the X value back into the secondary equation
5y+3(166.666666)=1000
5Y=500
Y=5

Answer:
X= 166.6666666666
Y=5

Please note, this is entry level calculus, and your teacher may expect you to use a different, longer route such as guess and check.

6 0

2 years ago

Using the graph below, describe the acceleration, position, and force at each of the

STALIN [3.7K]

Answer:

Step-by-step explanation:

(1). 2 m / s²

(2). 0 m / s² { Change from the previous section is - 2 m / s² }

(3). - 8 m / s² { Change from the previous section is - 8 m / s² }

(4). - 1 m / s² { Change from the previous section is + 7 m / s² }

(5). 0 m / s² { Change from the previous section is + 1 m / s² }

4 0

1 year ago

proszę o pomocy bardzo, lepej żeby było szybko, mam kartkówkę. Pytanie: wyznacz współrzędne i długość wektora AB jeżeli A(-3,-1)

IgorLugansk [536]

Answer:

Opps I don't know your language sorry

6 0

2 years ago

Help me with this problem 9x-(2x+8)=. And show your work? I'll be giving BRAINILEST!

kykrilka [37]

So first, you want to open the parenthesis here.

So, to do that, first look at the symbol before the parenthesis.

In this case it's a -.

So when it's a -, reverse the symbol inside the parenthesis. (This is because if you don't you're subtracting 2x and then adding 8, when really you're subtracting both 2x and 8.)

So,

9x - 2x - 8

Or simplified,

7x - 8

4 0

2 years ago

Read 2 more answers