3 years ago

OOOO

1 answer:

4 0

The correct answer is (C). The sample is a subset of the population, and the parameter is a characteristic of the population of interest.

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natulia [17]

Answer:

40.33

Step-by-step explanation:

First, add 18 and 22(you get 40. Then, add the decimals (you get .33). After that, put them together.

3 0

3 years ago

Reptile [31]

Answer:

$45

Step-by-step explanation

150 - 15 = 135

135 / 3 = 45

7 0

3 years ago

Likurg_2 [28]

Ratio = 40 : 166 = 20 : 83

Answer: 20 : 83

6 0

4 years ago

madreJ [45]

42 + 25% = 52 ( 25% is 1/4)

7 0

4 years ago

ziro4ka [17]

Answer:

The answer is " $0.45 \pm 0.18204$ "

Step-by-step explanation:

For the +4 sample proportion $= \frac{(7+2)}{(16+4)} = \frac{9}{20} = 0.45$

Sample percentage measurements estimated stdev

$= \sqrt{\frac{[(0.45)(1-0.45)]}{[(16+4)]}}\\\\ = \sqrt{\frac{[(0.45)(0.55)]}{[(20)]}}\\\\ = \sqrt{\frac{0.2475}{20}}\\\\= \sqrt{0.012375}\\\\=0.111$

Calculating the critical z for a=0.1, two-tailed = 1.64

Calculating the confidence interval:

$= 0.45 \pm 0.111 \times 1.64 \\\\= 0.45 \pm 0.18204$

4 0

3 years ago