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Alex777 [14]
2 years ago
13

Find the area of the triangle

Mathematics
1 answer:
Yakvenalex [24]2 years ago
4 0
It has to be number 2
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According to AccuData Media Research, 36% of televisions within the Chicago city limits are tuned to "Eyewitness News" at 5:00 p
umka21 [38]

Answer:

a) Mean: 900

Standard deviation: 24

b) Very unusual

c) Unusual

Step-by-step explanation:

We have a population proportion p=0.36 and we are taking a sample of size n=2500. This can be modeled as binomial sampling.

For this sampling distribution, we have a mean and STD that can be calculated as:

\mu_s=n\cdot p=2500\cdot0.36=900\\\\\sigma_s=\sqrt{n\cdot p(1-p)}=\sqrt{2500*0.36*0.64)}=\sqrt{576}=24

b) A value of 840 is a very unusual as is more than 2 standard deviations from the expected value of 900 (more exactly, at 2.5 standard deviations). Approximately 2% of the values are below 2 standars deviations from the mean.

Having 840 or less televisions tuned to "Eyewitness News" would have a probability of P=0.00621.

c) A value of 945 would be also unusual, but not as unusual as 840, as is between 1 and 2 standard deviation from the expected value.

Having 945 or more televisions tuned to "Eyewitness News" would have a probability of P=0.0304.

5 0
3 years ago
How can you subtract mixed numbers when the fraction in the front number is less than the second fraction?
irakobra [83]
U have to find a common denominator
5 0
3 years ago
A British company is sending you measurements for a table to build in your factory. The table top must be 50 cm × 75 cm. Your ma
IRINA_888 [86]

<u>Answer:</u>

19.5 x 29.25 inches

<u>Step-by-step explanation:</u>

We are given that the top of the table, which we are to build in our factory must of the the dimension 50 cm x 75 cm.

Also, out machine is calibrated in inches. So to find the size of the table in the inches, we need to multiply the given dimensions of the table top with the scale (1 cm = 0.39 inches)

50 cm ---> 50 x 0.39 = 19.5 inches

75 cm ---> 78 x 0.39 = 29.25 inches

Therefore, the dimensions of the table in inches are 19.5 x 29.25 inches.

3 0
2 years ago
Help please???!!!!?!!!!??!!?!!!!!!!!
Alexeev081 [22]

Answer:

b,c,f

Step-by-step explanation:

a is -8

b 8

c 8

d -8

e 1-

f 8

g -8

h -8

5 0
2 years ago
Select the correct answer from each drop-down menu.
mixer [17]

Answer:

1. Different

2. More

3. Greater too

Step-by-step explanation:

I'm not completely sure I'm not good with graphs but i hope its right!

5 0
1 year ago
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