Ask question

Ask question

All categories

Oduvanchick [21]

3 years ago

13

There are six teachers in a room, ages, 40, 50, 45, 55, and 65. If a 29 year old teacher enters the room, how will the mean age

and standard deviation be affected?

1 answer:

klasskru [66]3 years ago

7 0

The old mean was 51 now the mean is 42.33... (round that to 42) 51 - 42 = 9

You might be interested in

The sum of two numbers is 53 and the difference is 27. What are the numbers?

ikadub [295]

Answer:

The numbers are 39 and 14.

Step-by-step explanation:

Equation 1, sum of the numbers:

x + y = 53

Equation 2, difference of the numbers:

x - y = 25

System of equations:

x + y = 53

x - y = 25

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

2x = 78

x = 39

Solve for y:

39 + y = 53

y = 14

The numbers are 39 and 14.

8 0

2 years ago

Choose the answer. 3. (1 pt) Which is an example of the distributive property? A. 9 • (t + 5) = 9t + 45 B. 9 • (t + 5) = (t + 5)

saw5 [17]

The answer is A. this is because your are multiplying by 9 throughout

5 0

2 years ago

Read 2 more answers

Matt has $900 in a checking account, has $15,000 in investments, owns an

Natasha_Volkova [10]

Answer:

40400

Step-by-step explanation:

4 0

3 years ago

Mark is going to an awards dinner and wants to dress appropriately. He is running behind schedule and asks his little brother to

Cerrena [4.2K]

Answer:

The answer is " $\bold{\frac{2}{3}}$ ".

Step-by-step explanation:

Pick a shirt first: 3 choices

Pick slacks next: 2 choices

Then choose a tie: 1 choice

Total: $3 \times 2 \times 1 = 6$ outfits.

These will be similarly divided between the two slacks, so 3 black slack outfits of $6 = \frac{1}{2}$ . Similarly, the 6 styles are also divided between the option of 3 shirts. 2 blue shirt outfits $6 = \frac{1}{3}$

To recognize that over outfits are a mix of a blue shirt and black slack, it would be twice many more to add $\frac{1}{2} \ and \ \frac{1}{3}$ . Add $\frac{1}{2} \ and \ \frac{1}{3}$ , and remove the chance for both the black slack shirt and outfit and are one of the six outfits:

$\to \frac{1}{2} + \frac{1}{3} -\frac{1}{6} =\frac{3+2-1}{6} =\frac{4}{6} = \frac{2}{3}$

8 0

2 years ago

Read 2 more answers

Log and antilog of 5. 037<br>

N76 [4]

Use AIRMATH for faster repos

3 0

2 years ago