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Naily [24]
3 years ago
13

A simple random sample of 85 is drawn from a normally distributed population, and the mean is found to be 146, with a standard d

eviation of 34. Which of the following values is outside the 99% confidence interval for the population mean?
Mathematics
2 answers:
omeli [17]3 years ago
8 0

Answer:

anything below 136.5 or above 155.5

Step-by-step explanation:

the critical value from a Z distribution for the 99% confidence level is 2.576

so we just need to compute

146 + 2.576(34/sqrt(85))

and

146 + 2.576(34/sqrt(85))

Assoli18 [71]3 years ago
7 0

Answer:

<em>A. the value of 135 because it is not greater than 136.5</em>

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Step-by-step explanation:

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Answer:

x=2, y=1

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Step-by-step explanation:

x - 2y = 0

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This is the very last question I swear :-)
LUCKY_DIMON [66]

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3 years ago
What is the output value of (4x+2)(x-5)/2 using input value of x=2
Firdavs [7]

Answer:

-15

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

(4x + 2)(x - 5) / 2

x = 2

<u>Step 2: Evaluate</u>

  1. Substitute:                             (4 · 2 + 2)(2 - 5) / 2
  2. Parenthesis - Multiply:          (8 + 2)(2 - 5) / 2
  3. Parenthesis - Add:                10(2 - 5) / 2
  4. Parenthesis - Subtract:         10(-3) / 2
  5. Multiply:                                 -30 / 2
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3 years ago
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