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2 years ago

HELPP! BRAINLIEST AND 10 POINTS !!

Mathematics

2 answers:

Scrat [10]2 years ago

4 0

Answer:

I think it's 3 units so you got that right

iren2701 [21]2 years ago

4 0

Answer:

its the first one

Step-by-step explanation:

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A jar contains 3 red, 4 blue, and 2 white marbles. What is the probability that a marble drawn at random is not red?

sukhopar [10]

2/3 is <span>the probability that a marble drawn at random is not red.</span>

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3 years ago

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xxMikexx [17]

Answer:14.70

Step-by-step explanation: 14.70

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2 years ago

A past survey of students taking a standardized test revealed that % of the students were planning on studying engineering in c

Angelina_Jolie [31]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 95% confidence interval is $-0.00870$

Step-by-step explanation:

From the question we are told that

The first sample size is $n_1 = 1068000$

The first proportion $\r p_1 = 0.084$

The second sample size is $n_2 = 1476000$

The second proportion is $\r p_2 = 0.092$

Given that the confidence level is 95% then the level of significance is mathematically represented as

$\alpha = (100 - 95)\%$

$\alpha = 0.05$

From the normal distribution table we obtain the critical value of $\frac{ \alpha }{2}$ the value is

$Z_{\frac{\alpha }{2} } =z_c= 1.96$

Now using the formula from the question to construct the 95% confidence interval we have

$(\r p_1 - \r p_2 )- z_c \sqrt{ \frac{\r p_1 \r q_1 }{n_1} + \frac{\r p_2 \r q_2 }{n_2} }$

Here $\r q_1 = 1 - \r p_1$

=> $\r q_1 = 1 - 0.084$

=> $\r q = 0.916$

and

$\r q_2 = 1 - \r p_2$

=> $\r q_2 = 1 - 0.092$

=> $\r q_2 = 0.908$

$(0.084 - 0.092 )- (1.96)* \sqrt{ \frac{0.092* 0.916 }{1068000} + \frac{0.084* 0.908 }{1476000} }$

$-0.00870$

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2 years ago

Line segment AB has a length of 4 units. It is translated 2 units to the right on a coordinate plane to obtain line segment A′B′

olchik [2.2K]

Answer:

need help asap

Step-by-step explanation:

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3 years ago

If Marcia makes $6.75 an hour, how much did she make on the day depicted, she worked from 7:32 am to 3:43 pm?

svet-max [94.6K]

Take note that Marcia makes $6.75 and hour. She also worked from 7:32 am to 3:43 pm which 8 hours in total.

So multiply 8 by 6.75

Which is equal to $54.00 so the closest answer is C. $54.32

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3 years ago

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