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3 years ago

13

A bag contains 2 red, 4 blue, and 4 yellow marbles. What is the probability of pulling a red marble, putting the marble back, an

d then pulling a blue marble.
10%

8%

13.82%

14%

1 answer:

sdas [7]3 years ago

8 0

Answer:

B.) 8%

Step-by-step explanation:

Answer: B.) 8%

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Answer:

3 Mph

Step-by-step explanation:

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3 years ago

Explain tge distace formula. then use it to calculate the distance between A(1,1) and B(7,-7).

Juliette [100K]

The distance formula is based on the Pythagorean Theorem:

Distance = Square Root [(X2 - X1)^2<span> + (Y2 - Y1)^</span>2<span>]
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Source:http://www.1728.org/distance.htm

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3 years ago

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3 years ago

Find the distance between (3,4) and (4,7)

horsena [70]

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2 years ago

Read 2 more answers

A study claims that the mean age of online dating service users is 40 years. Some researchers think this is not accurate and wan

Mademuasel [1]

Answer: $H_0:\mu=40$

$H_0:\neq40$

Step-by-step explanation:

A null hypothesis is a hypothesis where a researcher generally try to disprove, it says that there is no statistically significant relationship between the two variables .
An alternative hypothesis says that there is a statistical significance between two variables.

Claim 1. : Mean age of online dating service users is 40 years.

i.e. $\mu=40$ , since it has equals sign so we take this as null hypothesis.

Claim 2. : Mean age of online dating service users is not 40 years.

$\mu\neq40$

⇒ Null Hypothesis : $H_0:\mu=40$

Alternative hypothesis : $H_0:\neq40$

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3 years ago