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stepan [7]
3 years ago
12

Am I correct????????

Mathematics
2 answers:
lord [1]3 years ago
7 0
Answer choice 3
is the best choice.
saul85 [17]3 years ago
5 0
The third answer choice.

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Please help! Thanks!: If a 95% confidence interval was being calculated using the following expression:
Roman55 [17]

The confidence interval can be calculated from the margin of error, and vice versa,

The margin of error of the confidence interval is 2.156

The confidence interval is given as:

\mathbf{CI = 3.2 \pm 1.96 \cdot 1.1}

The formula of confidence interval is:

\mathbf{CI = \bar x\pm E}

Where E represents the margin of error.

So, by comparison:

\mathbf{E = 1.96 \cdot 1.1}

Multiply

\mathbf{E = 2.156}

Hence, the margin of error of the confidence interval is 2.156

Read more about margin of errors at:

brainly.com/question/13990500

4 0
2 years ago
The diameter of a ball is 8 in. What is the volume of the ball? Use 3.14 for pi.
Snezhnost [94]

6 million 6 hundred and 66 thousands 6 hundred and 66

8 0
3 years ago
Read 2 more answers
There are 120 people on the bus 50% get off at the first stop 20% get off at the second stop. The rest get off on the third stop
erastova [34]

Answer:

48 people

Step-by-step explanation:

First, find how many were left after the first stop:

120(0.5)

= 60

Find how many were left after the second stop:

60(0.8)

= 48

So, since the rest got off on the third stop, this means 48 people got off on the third stop.

8 0
2 years ago
Read 2 more answers
Scott made 3 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all 3 necklaces
pantera1 [17]

Answer:

$2.90

Step-by-step explanation:

<u>Lets look at the information given:</u>

Scott made 3 necklaces

$14.40 is the cost for both the beads and pendants for all 3 necklaces

$5.70 was the cost of just beads for all 3 necklaces

Each necklace has 1 pendant

The first step to solving this equation is subtracting the cost of the beads from the total cost for the necklaces:

$14.40 - $5.70= $8.70

Now we know that cost for the 3 pendants for all 3 necklaces was $8.70, but we need to find how much EACH pendant costs. To find out, we simply divide the total cost for all 3 pendants by 3:

$8.70 ÷ 3 = $2.90

So each pendent costs $2.90

6 0
3 years ago
Translate into an algebraic expressions: a x is increased by 50% and decreased by 30% . What is the result?
klemol [59]

Answer:

21x/20 or can be written as  x + x/20 .

Step-by-step explanation:

The number is x

step 1

x is increased by 50%

value of 50% of x = 50/100 *x = x/2

New value after this change = x + 50% increase = x + x/2 = 3x/2

Step 2 The value obtained is decreased by 30%

value of 30% newly found number is = 30% of value found in step 1

value of 30% newly found number is = 30/100 * 3x/2 = 9x/20

This value (9x/2) is subtracted from value found in step 1(3x/2) as given that  value obtained is decreased by 30%

new value found after 30% decrease = 3x/2 - 9x/20 = (3x*10 -9x)/20

new value found after 30% decrease = (30x-9x)/20 = 21x/20

Thus, the result of x is increased by 50% and decreased by 30% is 21x/20 = x + x/20

6 0
2 years ago
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