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3 years ago

A sample with a sample proportion of 0.5 and which of the following sizes

Mathematics

2 answers:

Andreyy893 years ago

7 0

The answer is C.50. That is the answer.

In-s [12.5K]3 years ago

6 0

Answer:

Option C. 50

Step-by-step explanation:

Data:

Let the sample have the proportion = 0.5

The population level confidence = 95 %

The sample size that will produce the greatest confidence will be the size that has the greatest statistical significance.

Therefore, the correct option will be 50.

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Find the length of a line segment CD with endpoint C at (-3,1) and endpoint D at (5,6)

lutik1710 [3]

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3 years ago

Crawling Crayfish!

boyakko [2]

Answer: Crayfish, 25 s

Step-by-step explanation:

Given

The length of race is 60 cm

Flicker gets a 10 cm head-start

Cray fish covers 6 cm in 5 s i.e. its speed is

$\Rightarrow \dfrac{6}{5}=1.2\ cm/s$

Flicker covers 4 cm in 5 s, its speed is

$\Rightarrow \dfrac{4}{5}=0.8\ cm/s$

Time taken by Cray fish to cover the race is

$\Rightarrow t_1=\dfrac{60}{1.2}\\\\\Rightarrow t_1=50\ s$

Time taken by flicker to cover race with 10 cm head start

$\Rightarrow t_2=\dfrac{60-10}{0.8}\\\\\Rightarrow t_2=62.5\ s$

Time taken by crayfish is less. Hence, crayfish wins the race

When they both covers the same distance, they tied momentarily i.e.

$\Rightarrow 1.2t=10+0.8t\\\Rightarrow 0.4t=10\\\\\Rightarrow t=\dfrac{10}{0.4}\\\\\Rightarrow t=25\ s$

After 25 s, they tied the race.

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3 years ago

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scoundrel [369]

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