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andriy [413]
3 years ago
11

Select Yes or No to state whether each data set is likely to be normally distributed.

Mathematics
2 answers:
vodomira [7]3 years ago
6 0
1) Yes, 2) Yes, 3) No, 4) Yes
boyakko [2]3 years ago
6 0

Answer:

Step-by-step explanation:

Given are data sets and we have to find which are normally distributed

i) the weights of the babies born at a hospital

-- Yes.  Because majority or peak will have mean = median =mode weight with less and less number deviating from the mean more than 3 std deviations.

ii) the number of babies born each month at a hospital

--no.  This need not be normal, also this is a discrete variable

iii) the number of rooms on each floor of a hospital

-- No this is finite in number and discrete

iv) the lengths of the babies born at a hospital Yes

Because majority or peak will have mean = median =mode weight with less and less number deviating from the mean more than 3 std deviations.

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The ratio of Victors money to Susies money is 4:7 at first. After Victor spent half of his money and Susie spent $60, Susie had
valkas [14]

Answer:

Victor originally had $80

Step-by-step explanation:

Let Victor have $4x

Let Susie have $7x

Since Victor spent half his money, he now has $2x

Susie spent $60 and thus now has $(7x - 60)

The final ratio of Victor's money to Susie's money is therefore  2x : $(7x - 60). This is given 1:2. Now we just need to solve the proportion by cross-multiplying

2x : (7x - 60) = 1:2

1 × (7x - 60) = 2 × 2x

7x - 60 = 4x

3x = 60

x = 20

Therefore Victor originally had $4x = $80.

7 0
2 years ago
Read 2 more answers
IF YOU ANSWER THIS I WILL GIVE YOU BRAINLIEST!! 21PTS
vovangra [49]
<span>200 < 225 + 80x < 550

The 200 is the amount the Jenna currently have. 
225 + 80x is the amount that Jenna has to pay given x number of hours.
550 is the sum of Jenna's 200 and additional 350 she can get by selling pre-ordered Cds. This is the maximum amount she can pay for the studio rental and sound technicians.

225 + 80x < 550
80x < 550 -225
80x < 325
80x / 80 < 325/80
x < 4.06 or 4 hours

225 + 80x </span>→ 225 + 80(4) = 225 + 320 = 545
<span>
The number of hours for the sound technician will range from 1 hour to 4 hours. 

Assuming they will use 6 hours.

225 + 80(6) = 225 + 480 = 705
705 - 550 = 155

Jenna has to raise an additional $155 to pay off the studio rent and 6 hours of sound technicians. 


</span>
4 0
3 years ago
Find 2 numbers a and b such that (a-b)^2 &lt; (a+b)(a-b)&lt; (a+b)^2 Find two numbes a and b such that this is not true
Svet_ta [14]

Suppose for the moment that the inequality holds for all a,b:

(a-b)^2

Expanding everything gives

a^2-2ab+b^2

\implies-ab

In particular, the inequality says that -ab for any choice of a,b. But if a and b>0, then -ab>0 while ab.

So one possible choice of a,b could be a=-1 and b=1. Then we get

(-1-1)^2=4

(-1+1)(-1-1)=2

(-1+1)^2=0

but clearly it's not true that 4.

8 0
3 years ago
3x−(2x+1) for x=7 5/13
marusya05 [52]

Answer:

83/13 or 6.3846

Step-by-step explanation:

i subsituted for x and used a calculator

8 0
3 years ago
1 4/5 miles - 5/6 mile=
aleksandr82 [10.1K]
14/5-5/6=84/30-25/30=59/30

59/30=1 and 29/30
7 0
3 years ago
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