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galben [10]
3 years ago
10

Help me solve please

Mathematics
1 answer:
GarryVolchara [31]3 years ago
4 0
(4+5+2)
11X6-8
66-8
58-1
57

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A restaurantis planning to make changes to its menu. In order to decide which potential menu items are most popular with the cit
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Answer:

Simple random sampling survey method

Step-by-step explanation:

A simple random sampling is an unbiased survey technique Hence it will represent all the parts of the city's population.

In statistics, a simple random sample is a subset of individuals (a sample) chosen from a larger set (a population). Each individual is chosen randomly and entirely by chance, such that each individual has the same probability of being chosen at any stage during the sampling process

7 0
2 years ago
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The following information is obtained from two independent samples selected from two normally distributed populations.
AysviL [449]

A. The point estimate of μ1 − μ2 is calculated using the value of x1 - x2, therefore:

μ1 − μ2 = x1 – x2 = 7.82 – 5.99

μ1 − μ2 = 1.83

 

B. The formula for confidence interval is given as:

Confidence interval = (x1 –x2) ± z σ

where z is a value taken from the standard distribution tables at 99% confidence interval, z = 2.58

and σ is calculated using the formula:

σ = sqrt [(σ1^2 / n1) + (σ2^2 / n2)]

σ = sqrt [(2.35^2 / 18) + (3.17^2 / 15)]

σ = 0.988297

 

Going back to the confidence interval:

Confidence interval = 1.83 ± (2.58) (0.988297)

Confidence interval = 1.83 ± 2.55

Confidence interval = -0.72, 4.38

3 0
3 years ago
Pls hurry I’m being timed
Ksju [112]
I believe the answer is “A”
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2 years ago
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Select the correct statement for the graph
lianna [129]
C. For each hour he works, his earnings go up by $8. 
5 0
2 years ago
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What does (x2−50x−600)÷(x−60) equal?
Natalka [10]

Answer:

x+10      x ≠ 60

Step-by-step explanation:

(x^2−50x−600)

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

   (x−60)

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(x-60)(x+10)

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

(x-60)

Cancel the like terms

x+10

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