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FromTheMoon [43]
3 years ago
7

Twelve different video games showing drug use were observed. The duration times of drug use were​ recorded, with the times​ (sec

onds) listed below. What requirements must be satisfied to test the claim that the sample is from a population with a mean greater than 75 ​sec? Are the requirements all​ satisfied?
86 13 623 50 0 53 198 45 172 0 2 59

What requirements must be​ satisfied? Select all that apply.

A. Either the population is normally​ distributed, or ngreater than​30, or both.

B. The conditions for a binomial distribution must be satisfied.

C. At least one observation must be above or below 75 sec.

D. The sample observations must be a simple random sample.
Mathematics
1 answer:
Amanda [17]3 years ago
4 0

the answer to the question will be c

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What is the arithmetic mean for the following numbers,88,80,75,70,38,45,70,60,60,50​
Natalija [7]

Answer:

63.6

Step-by-step explanation:

X=£fx/n

= 88+80+75+70+38+45+70+60+60+50/10

= 636/10

= 63.6

Mark me as Brainliest.

Please feel free to ask if you have any questions.

Thanks

5 0
2 years ago
There are 276 students.
Lynna [10]

Step-by-step explanation:

Number of males is

  • 276 - 158 = 118

Number of males not enrolled

  • 118 - 82 = 36

Number of females not enrolled

  • 158 - 102 = 56

(a)

The table based on data is

<u>                 Enrolled        Not enrolled      Total  </u>

<u>Male            82                  36                     118    </u>

<u>Female        102                56                     158   </u>

Total            184                 92                     276

(b)

Percentage of students were males that went to magic college

  • enrolled male / total students =           (use table above)
  • 82/276*100% = 29.71% (rounded)

(c)

Percentage of females went to magic college

  • enrolled female / total female =           (use table above)
  • 102/158*100% = 64.56% (rounded)
7 0
2 years ago
How do you do this question?
ankoles [38]

Step-by-step explanation:

S = ∫ 2π y ds

ds = √(1 + (dx/dy)²) dy

ds = √(1 + (8y)²) dy

ds = √(1 + 64y²) dy

S = ∫₁² 2π y √(1 + 64y²) dy

S = π/64 ∫₁² 128y √(1 + 64y²) dy

S = π/64 [⅔ (1 + 64y²)^(³/₂)] |₁²

S = π/96 (1 + 64y²)^(³/₂) |₁²

S = π/96 (1 + 256)^(³/₂) − π/96 (1 + 64)^(³/₂)

S = π/96 (257√257) − π/96 (65√65)

S = π/96 (257√257 − 65√65)

3 0
3 years ago
Four different beverages are sold at a​ fast-food restaurant: soft​ drinks, tea,​ coffee, and bottled water. Explain why the typ
suter [353]

Answer:  The values of the variable can only be placed into categories.

Step-by-step explanation:

Type list of beverage sold is a categorical variable because the values of the variable can only be placed into categories.

A categorical variable, also referred to as nominal variable. is a variable which consist of two or more categories, this usually does not involve special ordering of the categories.

8 0
3 years ago
the front of a tent is an equilateral triangle with the ratio of its base b toits height h given by b/h+2/3 rewrite the equation
kap26 [50]

Answer:

h = b(√3)/2

Step-by-step explanation:

The ratio of base to height of an equilateral triangle is ...

... b/h = 2/√3

Multiplying both sides of the equation by (√3)h/2, we get

.. h = b(√3)/2 . . . . . . your equation with h as the subject

8 0
3 years ago
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