All categories

2 years ago

Guys please helppppppppppppppppppppppppppppp

Mathematics

2 answers:

inessss [21]2 years ago

6 0

Answer:

the second one is the answer is correct

bearhunter [10]2 years ago

4 0

Answer:

the 2nd one is the answer

You might be interested in

According to the last census (2010), the mean number of people per household in the United States is LaTeX: \mu = 2.58 Assume a

Veseljchak [2.6K]

Answer:

P(2.50 < Xbar < 2.66) = 0.046

Step-by-step explanation:

We are given that Population Mean, $\mu$ = 2.58 and Standard deviation, $\sigma$ = 0.75

Also, a random sample (n) of 110 households is taken.

Let Xbar = sample mean household size

The z score probability distribution for sample mean is give by;

Z = $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

So, probability that the sample mean household size is between 2.50 and 2.66 people = P(2.50 < Xbar < 2.66)

P(2.50 < Xbar < 2.66) = P(Xbar < 2.66) - P(Xbar $\leq$ 2.50)

P(Xbar < 2.66) = P( $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ < $\frac{2.66-2.78}{\frac{0.75}{\sqrt{110} } }$ ) = P(Z < -1.68) = 1 - P(Z 1.68)

= 1 - 0.95352 = 0.04648

P(Xbar $\leq$ 2.50) = P( $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ $\leq$ $\frac{2.50-2.78}{\frac{0.75}{\sqrt{110} } }$ ) = P(Z $\leq$ -3.92) = 1 - P(Z < 3.92)

= 1 - 0.99996 = 0.00004

Therefore, P(2.50 < Xbar < 2.66) = 0.04648 - 0.00004 = 0.046

7 0

3 years ago

Fun world charges a flat rate of $10.00 per day for stroller rental plus $2.00 per hour the stroller is being used. If the numbe

Irina-Kira [14]

10+2h because 10 dollars is coming whether you like it or not then you have to pay 2 dollars per each hour you use it....i would just carry the kid.

3 0

4 years ago

Read 2 more answers

QUESTION 6 please!!!!!!!!

katovenus [111]

Answer:

the picture is really blurry I can't read it

8 0

3 years ago

Find the distance between the two points in simplest radical form.<br> (1.5) and (-5,8)

Nuetrik [128]

Answer:

exact: 3 √ 5

decimal: 6.70820393 …

Hope this helps

3 0

3 years ago

6. Think of an experiment for which an event occurs with each probability. Explain your choice. a) 100% b) 1/2 c) 1:6 d) 0

mel-nik [20]

Answer:

Read below.

Step-by-step explanation:

a) 100%

Picking a green marble out of a bag of all green marbles.

In this, you would pick a green marble no matter what since the bag only contains green marbles.

b) 1/2

Flipping a fair coin and landing heads.

On a fair coin, there are 2 possibilities, head or tails. Since this is fair, there is a 50% chance you would get heads or tails.

c) 1:6

Rolling a 2 on a fair 1-6 sided die.

On this fair die, there are 6 possibilities, 1, 2, 3, 4, 5, or 6. Since this is a fair die, there is 1:6 chance you would roll a 2.

d) 0

Picking a red marble out of a bag of all green marbles.

This probability would be 0 since there are no red marbles in our bag of only green marbles.

4 0

3 years ago

Read 2 more answers