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Natalka [10]
3 years ago
12

Italian Barolo ~ Italy is famous for several types of wine. The region of Piedmont is famous for a type of wine called "Barolo".

A wine salesperson wants to know the demand for Barolo wine sold at Supermarkets. He selects a random sample of wine sales from a popular supermarket and constructs a 95% confidence interval for the actual proportion of Barolo wine sold to be (0.2931, 0.4396). What is the sample proportion? Give the exact answer as a decimal.
Mathematics
1 answer:
slega [8]3 years ago
3 0

Answer:

The sample proportion is 0.36635  

Step-by-step explanation:

A confidence interval has two bounds, a lower bound and an upper bound.

The sample proportion is the halfway point betwen those two bounds, that is, the sum of those bounds divided by 2.

In this problem, we have that:

Lower bound: 0.2931

Upper bound: 0.4396

What is the sample proportion?

(0.2931 + 0.4396)/2 = 0.36635

The sample proportion is 0.36635  

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7 0
3 years ago
12x-19=9x+5 solve for x
mestny [16]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

12x-19=9x+5  Equation/Question

Step 2

12x-19=9x+5  Simplify

12x-19=9x+5

Step 3

12x-19=9x+5  Subtract 9x

3x-19=5

Step 4

3x-19=5  add 19

3x=24

Step 5

3x=24  Divide by 3

answer

x=8

Hope this helps

7 0
3 years ago
What is the mean of the data set rounded to the nearest tenth?
madam [21]

So the mean formula is \frac{sum\ of\ all\ numbers\ in\ data\ set}{how\ many\ numbers\ there\ are\ in\ data\ set} . Using that formula, we can solve it as such:

\frac{0.7+1.1+0.8+1.6+1.6+2.2+1.1}{7}=\frac{9.1}{7}=1.3

<u>In short, your mean is 1.3, or A.</u>

4 0
3 years ago
Read 2 more answers
In a newspaper, it was reported that yearly robberies in Springfield were up 40% to 196 in 2013 from 2012. How many robberies we
oee [108]

Answer:

There were 140 robberies in Springfield in 2012.

Step-by-step explanation:

Let's marked (named) robberies in 2012 with x, which is worth 100%

196 robberies in 2013 worth 100% + 40% = 140%

Now we will make proportion

x : 196 = 100 : 140

When we multiply external and internal members we get

140 x = 196 · 100 => 140 x = 19600 => x = 19600/140 = 140

x = 140 robberies in 2012

5 0
3 years ago
A video game club charges a fixed annual membership fee of $20 and $2 per video game rented. Let f(n) represent the total annual
Rasek [7]
<span>fixed annual membership fee of $20
</span><span>$2 per video game rented.
</span><span>Let f(n) represent the total annual cost of renting n video games
so
f(n) = 20 + 2n

if </span><span>increased by $15 the next year
then
f(n) = </span>20 + 2n + 15
f(n) = 2n + 35

answer
<span>f(n) = 2n + 35 (first choice)</span>
5 0
4 years ago
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