Ask question

Ask question

All categories

2 years ago

8

The tar contents of 8 brands of cigarettes selected at random from the latest list released by the federal Trade Commission is a

s follows: 7.3, 8.6, 10.4, 16.1, 12.2, 15.1, 14.5, and 9.3 milligrams. Calculate (
a. The mean;(
b. The variance.

1 answer:

sattari [20]2 years ago

3 0

The mean is 11.7 i don't know the Variance

You might be interested in

Someone please help me!

bija089 [108]

Answer:

A = 58

B =:25

Step-by-step explanation:

C = A + B

83 = 9x + 4 + 4x + 1

83 = 13x + 5

13x = 78

x = 78/13

x = 6

A = 9x + 4 = 9 x 6 + 4 = 58

B = 4x + 1 = 4 x 6 + 1 = 25

7 0

2 years ago

Solve the given equation by completing the square.

Dmitriy789 [7]

Answer:

a = -4, b = 3 and c = 6 (OR)

a = -4, b = -3 and c = 6

Step-by-step explanation:

$x^{2} +8x = 38$

Add 16 to both sides.

$x^{2} +8x+16 = 38 + 16$

$(x+4)^{2} =54$

$x + 4 = \sqrt{54}$ or $x + 4 = -\sqrt{54}$

$x+4=3\sqrt{6}$ or $x+4=-3\sqrt{6}$

$x=-4+3\sqrt{6}$ or $x=-4-3\sqrt{6}$

Therefore, a = -4, b = 3 and c = 6 (OR)

a = -4, b = -3 and c = 6

6 0

3 years ago

Read 2 more answers

Marlene has a credit card that uses the adjusted balance method. For the first 10 days of one of her 30-day billing cycles, her

saw5 [17]

For APEX it’s C

(0.15/365 • 30) ($320)

Good luck my dudes!!

8 0

2 years ago

Read 2 more answers

If people blink about 13 times per minute, how many times do they blink in 7 hours?

SCORPION-xisa [38]

Answer:

Step-by-step explanation:

1 hour=60 min

7 hours=60×7=420 min

number of blink=420×13=5460

4 0

2 years ago

How to round to the nearest 1000 even if there is no thousands in the number given

Katen [24]

Answer:

To round a number to the nearest 1000, look at the hundreds digit. If the hundreds digit is 5 or more, round up. If the hundreds digit is 4 or less, round down

3 0

2 years ago