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kondaur [170]
3 years ago
11

Are these answers correct? also is there any work to be shown?

Mathematics
1 answer:
vekshin13 years ago
7 0
Yes, your answer are correct! There is a little work to be shown on number 1, but it isn't necessary.

Hope this helps! Brainliest it if it does!
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What is the length of DE
Valentin [98]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
The proportion of households in a region that do some or all of their banking on the Internet is 0.31. In a random sample of 100
Alenkasestr [34]

Answer:

Approximate probability that the number of households that use the Internet for banking in a sample of 1000 is less than or equal to 130 is less than 0.0005% .

Step-by-step explanation:

We are given that let X be the number that do some or all of their banking on the Internet.

Also; Mean, \mu = 310/1000 or 0.31   and  Standard deviation, \sigma = 14.63/1000 = 0.01463 .

We know that Z = \frac{X-\mu}{\sigma} ~ N(0,1)

Probability that the number of households that use the Internet for banking in a sample of 1000 is less than or equal to 130 is given by P(X <= 130/1000);

 P(X <=0.13) = P( \frac{X-\mu}{\sigma}  <= \frac{0.13-0.31}{0.01463} ) = P(Z <= -12.303) = P(Z > 12.303)

Since this value is not represented in the z table as the value is very high and z table is limited to x = 4.4172.

So, after seeing the table we can say that this probability is approximately less than 0.0005% .

4 0
3 years ago
Please help i will give brainlyest i promise
oksian1 [2.3K]

Answer:

the fist one

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A rock show is being televised the lead singer who is 75 inches tall is 15 inches tall on a TV monitor the image of the bass pla
VladimirAG [237]
75 : 15 = x : 13
15 x = 75 · 13
15 x = 975
x = 975 : 15
x = 65
Answer:
The bass player is 65 inches tall.
6 0
3 years ago
How many solutions does this system have?
Sunny_sXe [5.5K]

Answer:

there is one solution in my opinion

Step-by-step explanation:

3 0
3 years ago
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