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EastWind [94]
3 years ago
14

"A researcher collects 25 data points that yield a mean of 8.164 and a standard deviation (based on N – 1) of 2.237. What is the

standard error for the distribution of means?"
Mathematics
2 answers:
aleksley [76]3 years ago
6 0

Answer:

Standard error for the distribution of means = 0.4474

Step-by-step explanation:

Standard error for the distribution of means is given as

σₓ = σ/√n

where σ = standard deviation = 2.237

n = sample size = 25

σₓ = (2.237/√25)

σₓ = 0.4474

Hope this Helps!!!

Oxana [17]3 years ago
6 0

Answer:

The standard error for the distribution of means is 0.457.

Step-by-step explanation:

The standard error for the distribution of means is given as sample standard deviation divided by the square root of (N - 1)

sample standard deviation = 2.237

N is sample size = 25

Standard error = 2.237 ÷ sqrt(25 - 1) = 2.237 ÷ sqrt(24) = 2.237 ÷ 4.899 = 0.457

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Katen [24]

Answer:

  • Jon - Andrea = 1/10
  • Callie - Jon = 3/10

Step-by-step explanation:

In terms of tenths, the distances each hiked are ...

  • Andrea — 4/10
  • Jon — 5/10
  • Callie — 8/10

Then the differences of interest are ...

  Jon - Andrea = 5/10 -4/10 = 1/10

  Callie - Jon = 8/10 - 5/10 = 3/10

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Jon hiked 1/10 of the trail more than Andrea.

Callie hiked 3/10 of the trail more than Jon.

6 0
3 years ago
PLEASEPLEASE ANSWER
IRINA_888 [86]

Answer:

x = 7

Step-by-step explanation:

A triangle's total interior angle measurement will equal 180°.

Set all measurements equal to 180:

(82) + (9x - 6) + (6x - 1) = 180

Simplify. Combine like terms:

(82 - 6 - 1) + (9x + 6x) = 180

(82 - 7) + (15x) = 180

(75) + 15x = 180

Next, isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

~

First, Subtract 75 from both sides of the equation:

15x + 75 = 180

15x + 75 (-75) = 180 (-75)

15x = 180 - 75

15x = 105

Next, divide 15 from both sides of the equation:

(15x)/15 = (105)/15

x = 105/15

x = 7

7 is your value for x.

~

3 0
3 years ago
A math class has three girls and 7 boys in the 7th grade and five girls and five boys in the 8th grade the teacher randomly sele
Anuta_ua [19.1K]

Answer:

7/20

Step-by-step explanation:

Seventh grade: Total = 3 + 7 = 10

Number of boys = 7 boys

Probability of a boy being picked = 7/10

Eighth grade: Total 5 + 5 = 10

Number of boys = 5

Probability 5/10 = 1/2

The probability of the correct outcome = 7/10  *  1/2  = 7 / 20

Answer: 7 / 20

7 0
3 years ago
Interpret the following table about school dropout at the basic level (5 marks)
barxatty [35]

Answer:

Step-by-step explanation:

Given the following :

- - - Jhs

Basic level - - - - Boys - - - - Girls - - - - Total

Primary - - - - - - - 49 - - - - - - 51 - - - - - - 100%

Jhs - - - - - - - - - - 56 - - - - - - 44. - - - - - - 100%

With the information above,

Primary Dropout percentage:

BOYS : [49 / (49 +51)] × 100.= 49%

GIRLS : [51 / (49 +51)] × 100.= 51%

Jhs: Dropout percentage

BOYS : [56 / ( 56 + 44) × 100 = 56%

GIRLS : [44 / (44 +56)] × 100.= 44%

8 0
3 years ago
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snow_lady [41]

Answer:

oof

Step-by-step explanation:

8 0
2 years ago
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