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Reptile [31]
2 years ago
8

Please answer this correctly

Mathematics
1 answer:
vodka [1.7K]2 years ago
7 0

Answers:

First model

20% vacancy

=========================================================

Work Shown:

25 vacant rooms

125 rooms total

25/125 = (1*25)/(5*25) = 1/5 = 0.20 = 20% vacancy

The model that represents this is the first model since there are 5 blocks, and each block is 25 units wide. So the total width is 5*25 = 125. Each tickmark along the top represents an increment of 20%. So we have 0%, 20%, 40%, 60%, 80% and 100%.

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A livestock company reports that the mean weight of a group of young steers is 1143 pounds with a standard deviation of 88 pound
malfutka [58]

Answer:

<em>a) P(x<1200)=74.14%</em>

<em>b) P(1100<X<1250)=57.54%</em>

Step-by-step explanation:

<u>Normal Distribution</u>

The normal distribution, also known as the bell curve, is a distribution that occurs naturally in many situations of life. We use the model N(\mu,\sigma) to understand the behavior of some real-life variables. Where \mu is the mean value and \sigma is the standard deviation.

In our case, we have

\mu=1143,\ \sigma=88

And are required to find the percentage of steers whose weigh lie within a given range. We must use some sort of table or digital means to compute the values because the normal distribution cannot be calculated directly by a formula. We use the NORMDIST (or NORM.DIST) formula for Excel which gives us the left tail of the area behind the bell curve, i.e. the cumulative percentage for a give value of X. The formula has the form

NORM.DIST(x,mean,standard_dev,cumulative)

a) X<1200

The formula is used with the following parameters

NORM.DIST(1200,1143,88,true)

and we get

P(X

b) We need to compute P(1100<X<1250). To do this, we calculate both left tails and the subtract them

NORM.DIST(1100,1143,88,true)=0.3125

NORM.DIST(1250,1143,88,true)=0.8880

P(1100

\boxed{P(1100

6 0
2 years ago
find the number of terms in an AP given that it's first and last terms are a &amp; 37a respectively and it's common difference i
KiRa [710]

Answer:

Substitute the values give into the nth term of the arithmetic progression and solve this the steps are give above in the picture

6 0
2 years ago
Analyze the diagram below and complete the instructions that follow.Find cos 45°
AlekseyPX

Answer: \frac{\sqrt{2} }{2}

Step-by-step explanation: On the unit circle

8 0
3 years ago
3. which is a prime number 32, 42, 29, 15
Tresset [83]
29 is the answer. 32 can be divided by , 42 can also, and 15 can be divided by 5.
7 0
3 years ago
Read 2 more answers
Function rule y=3x-3
lianna [129]

Answer:

-15, -9, -3, 3

Step-by-step explanation:

First One:

y =3(-4)-3 is -15

Second:

y= 3(-2)-3 is -9

Third:

y= 3(0)-3 is -3

Last One:

y= 3(2)-3 is 3

4 0
3 years ago
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