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REY [17]
3 years ago
9

7. A travel website wants to gauge the perceived quality of a major airport. The maximum possible rating is 10, and the results

of a random sample of 50 travelers can be found in the Airport.xlsx file. Develop a 95% confidence interval estimate of the population mean rating for the airport based upon this data.
Mathematics
1 answer:
Airida [17]3 years ago
8 0

Answer:

The 95% confidence interval has Minimum = 6.053 and Maximum = 7.467

Step-by-step explanation:

Here we have

Data as

1 5 6 7 8 8 8 9 9 9 9 10 3 4 5 5 7 6 8 9 10 5 4 6 5 7 3 1 9 8 8 9 9 10 7 6 4 8 10 2 5 1 8 6 9 6 8 8 10 10

The sum is 338

∴ Mean, \bar x = 6.76, Standard Deviation, s = 2.55

Sample size, n = 50

For a 95% confidence interval, we have

CI=\bar{x}\pm z\frac{s}{\sqrt{n}}

Where z is;

z at 95% z = \pm1.96

Therefore, we have

95% confidence interval as Minimum = 6.053 to Maximum = 7.467.

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If p(x)=2x^2-4x and q(x)=x-3 what is (p*q)(x)
Tanya [424]

Answer: 2x³-10x²+12x or 2x(x²-5x+6)

Step-by-step explanation:

(p*q)(x) means p(x) and q(x) multiplied together.

(2x²-4x)(x-3)

2x³-6x²-4x²+12x

2x³-10x²+12x

You can also factor this by taking out a 2x.

2x(x²-5x+6)

4 0
3 years ago
Pls someone help me with part b and their is 5.6 acres
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6 0
3 years ago
Two numbers total 86 and have a difference of 12. Find the two numbers.
mestny [16]
Let the two numbers be x and y.

x + y = 86
+
x - y = 12
_________
2x + 0 = 98
__________


2x = 98

x = 98/2
 
x = 49


From    x + y = 86

49 + y = 86

y = 86 - 49

y = 37

The numbers are 49 and 37.
4 0
3 years ago
A) Using the equation for average rate above, determine the cheetah's Please me forte
pychu [463]

Answer  The Mexican tribe where children of FOUR are fed mind-bending magic mushrooms by witchdoctors in 'surviving childhood' rituals

The hallucinogenic mushrooms grow in the hills of Mexico's Oaxaca state

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Alejandro Garces, three, will be fed the mushrooms by his parents in June

His family will chant to give thanks to pagan gods when the effects kick inStep-by-step explanation:

5 0
2 years ago
If m rst = 70, m qst = 2x, and m qsr = 3x-10 what is the m qsr
Anna [14]

Answer:

m qsr = 62°

Step-by-step explanation:

From my understanding, the question states 3 angles of a triangle

All 3 angles of a triangle are equal to 180°.

<u>Step 1: Find x</u>

<em>70 + 2x + 3x - 10 = 180°</em>

<em>70 + 5x - 10 = 180</em>

<em>5x = 180 - 60</em>

<em>x = 120/5</em>

x = 24°

<u>Step 2: Find angle qsr</u>

<em>m qsr = 3x - 10</em>

<em>m qsr = 3(24) - 10</em>

m qsr = 62°

!!

4 0
3 years ago
Read 2 more answers
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