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zvonat [6]
3 years ago
13

Now let's suppose that there are three bidders who have independent, private values vi which are either 1 or 3. for each bidder,

the probabilities of 1 and 3 are both 1/2. what is the seller's expected revenue in this case?
Mathematics
1 answer:
vodomira [7]3 years ago
4 0
Expected value, 
E[X] = \sum p_i*x_i = (1/2)*1 + (1/2)*3 = 0.5+1.5 = 2
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PLEASEEE HELPPPP!!!!!!!!!skkaksks
Vesnalui [34]

Step-by-step explanation:

  1. (√3+√7)(√3+√7)
  2. (√3)^2+[(√3*√7)+(√3*√7)]+(√7)^2
  3. 3+2√21+7
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6 0
2 years ago
A poll found that 53% of a sample of 1170 teens in a certain large country go online several times a day. (Treat this sample as
posledela

Answer:(a) margin error = 2.4%

(b) The margin error gives the measure in percentage of how the population parameter determined differ from the real population statistics or value.

(c) in 90% of the samples of teens in the country, the percent who go online several times a day will be within 50.6% and 55.4%. of the estimated 100%

Step-by-step explanation:

Using the proportion formulae

Margin error = z √p(1-p)/n

n= 1170, p = 53% = 0.53, 1-p = 0.47

and the z value at 90% C.I = 1.645

M error= 1.645 √0.53×0.47/1170

Margin error = 0.024 = 0.024 ×100

Margin error = 2.4%

53 - 2.4 = 50.6% and 53 + 2.4 = 55.4%

In other words 90% of the time: the number of teens who go online several time a day will be between 50.6 and 55.4%.

8 0
3 years ago
Simplify the following<br> 1. x3y2zx?y2z4y
Genrish500 [490]
X4y5z5 okayyyyyyyyyy
8 0
3 years ago
Need help with two of these! Thank you
astraxan [27]

Step-by-step explanation:

17) 3x+5-12+4x+2x

3x+4x+2x +5-12

8x-7

if x =6

8*6-7 =48-7

= 41

18.) 9(3x-4y+8)

27x-36y+72

6 0
2 years ago
204% as a fraction? who every now put it in comments
ExtremeBDS [4]

Answer:

204/100 = 51/25= 2 1/25 that is the answer

6 0
2 years ago
Read 2 more answers
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