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frozen [14]
3 years ago
9

Suppose that you are attempting to estimate the annual income of 1700 families. In order to use the infinite standard deviation

formula, what sample size, n, should you use
Mathematics
1 answer:
andrew-mc [135]3 years ago
7 0

Answer:

Sample size should be less than 85

Step-by-step explanation:

Sample size should be less than 85

Step-by-step explanation:

To use the infinite standard deviation formula, n has to be <= (0.05)(1700)

n <= 85

So the sample size has to be less than 85

In another way too,

n = sample size

N = population size

For population, we multiply correction factor to the infinite standard deviation

F is <= 0.05

n/{N}

n<0.05x1700

n<85

Sample size should be less than 85

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Ainat [17]

Answer:

Enlargement? or try Translation

5 0
3 years ago
What value for n makes the equation true? 8n - 2 = 2
kiruha [24]

Answer:

n = 1/2

Step-by-step explanation:

The answer is 1/2

I hope this helps you

3 0
3 years ago
Read 2 more answers
The Atlanta Braves baseball team has a mean batting average of 250 with a standard deviation of 20. Assume the batting averages
nignag [31]

Answer:

68 %

Step-by-step explanation:

Since we have our mean x = 250 and standard deviation σ = 20, we need to find how many standard deviations away the values 230 and 270 are.

Note x - σ = 250 - 20 = 230 and x + σ = 250 + 20 = 270

The values are one standard deviation away.

So, the values between 230 and 270 lie in the range x - σ to x + σ.

Since the batting averages are approximately normally distributed and for a normal distribution, 68 % of the values lie in the range x - σ to x + σ.

So, 68 % of Braves players fall between 230 and 270.

7 0
3 years ago
Let K and T be the current ages of two siblings, Katie and Thomas. Katie is currently twice the age of Thomas. In 6 years, Katie
Pavlova-9 [17]

Answer:

Katie is 6 years old and Thomas is 3 years old

Step-by-step explanation:

Given that we should let K and T be the current ages of two siblings, Katie and Thomas.

If Katie is currently twice the age of Thomas then,

K = 2T

and in  6 years, Katie will be 4 times Thomas's current age then

K + 6 = 4T

Solving both equations simultaneously by substituting the value of K given in the first equation into the second

2T + 6 = 4T

Collect like terms

6 = 4T - 2T

6 = 2T

Divide both sides by 2

T = 3

Recall that K = 2T

K = 2 * 3

= 6

Hence Katie is 6 years old while Thomas is 3 years old

6 0
3 years ago
I need help with number 1 please
Bond [772]
306 / 3.6 = 85 gallons per minute

5,200 = 85x
x = <span>61.1764705882

hope this helps</span>
4 0
3 years ago
Read 2 more answers
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