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Nookie1986 [14]
3 years ago
8

Consider this population data set:4, 6, 7, 11, 12, 18, 26, 23, 14, 31, 22, and 12. The values 11, 31, 22, and 12 constitute a ra

ndom sample drawn
from the data set.
The sample mean is more than the population mean by
Reset
Next
Mathematics
1 answer:
irga5000 [103]3 years ago
3 0

Answer:

3.5

Step-by-step explanation:

Find the Mean of the Population Data Set

4 + 6 + 7 + 11 + 12 + 18 + 26 + 23 + 14 + 31 + 22 + 12 = 186

186 ÷ 12 = 15.5

Find the Mean of the Sample Data Set

11 + 31 + 22 + 12 = 76

76 ÷ 4 = 19

Subtract

19 - 15.5 = 3.5

Answer: <em>The sample mean is more than the population mean by 3.5</em>

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Pls help w 4 and 5 I know it might be easy for other ppl but not for me :(
kakasveta [241]

Answer:

4.) IDK, sorry

5.)

    200

    x 7.4

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  1400          Adding

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3 0
3 years ago
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\250 doctors from three countries in Europe meeting in a conference to decide whether to approve a new vaccine for the flu. Amon
Bezzdna [24]

Answer:

0.683 = 68.3% probability that a randomly chosen doctor is in favor of the vaccine

Step-by-step explanation:

(a) What is the probability that a randomly chosen doctor is in favor of the vaccine

75% of 115/250 = 0.46(German).

60% of 65/250 = 0.26(French).

65% of 70/250 = 0.28(Englishmen). So

p = 0.75*0.46 + 0.6*0.26 + 0.65*0.28 = 0.683

0.683 = 68.3% probability that a randomly chosen doctor is in favor of the vaccine

8 0
3 years ago
What is the slope of the line with the equation of y=3/4x that passes through the point (2,1)?
Tanzania [10]

C

the equation of a line in ' slope- intercept form ' is

y = mx + c ( m is the slope and c the y-intercept )

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4 0
3 years ago
A savings account is started with an initial deposit of $700. The account earns 1.5% interest compounded
marusya05 [52]

Answer:

  (a)  A = 700×1.015^t

  (b)  36.2 years

Step-by-step explanation:

(a) Each year, the account value is multiplied by (1 + 1.5%) = 1.015. Repeated multiplication is signified using an exponent. In t years, when the account has been multiplied by 1.015 t times, the account value will be ...

  A = $700×1.015^t

__

(b) You want to find t when A=$1200. Logarithms are involved.

  1200 = 700×1.015^t . . . . use 1200 for A

  1200/700 = 1.015^t . . . . . divide by 700

  log(12/7) = t×log(1.015) . . . . . take logarithms

  log(12/7)/log(1.015) = t ≈ 36.2 . . . . divide by the coefficient of t

It will take about 36.2 years for the account balance to reach $1200.

4 0
4 years ago
The table represents a function. A 2-column table with 5 rows. The first column is labeled x with entries negative 6, 7, 4, 3, n
sveta [45]

Answer:

-2 is an output of the function.

Step-by-step explanation:

The given table is as follows:

\left[\begin{array}{cc}{x}&f(x)\\-6&8\\7&3\\4&-5\\3&-2\\-5&12\end{array}\right]

Here, the values written on the left side of table i.e. values of x are known as the <em>domain </em>values or <em>input </em>values to a function.

The values written on the right side of table i.e. values of f(x) are known as the <em>range</em> values or <em>output</em> values of the function f(x).

Let us consider the pairs of values:

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The same thing applies for all the pairs of values.

similarly for the pair (3,-2):

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i.e. when x=3, the output value f(x) =-2.

So, the answer is:

<em>-2 is an output of the function.</em>

4 0
3 years ago
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