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PilotLPTM [1.2K]
3 years ago
6

A researcher wishes to examine the effects of a new reading program on

Mathematics
1 answer:
Nady [450]3 years ago
3 0

Answer:

a control group is not used

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In a statewide lottery, one can buy a ticket for $1. With probability .0000001, one wins a million dollars ($1,000,000), and wit
Dahasolnce [82]

Using the expected value, it is found that the mean of the distribution equals $0.1.

  • The expected value, which is the mean of the distribution, is given by <u>each outcome multiplied by it's probability</u>.

The probabilities of <u>each outcome</u> are:

  • .0000001 probability of earning $1,000,000.
  • .9999999 probability of earning $0.

Thus, the mean is given by:

E(Y) = 0.0000001(1000000) + 0.9999999(0) = 0.1

Thus showing that the expected value is $0.1.

A similar problem is given at brainly.com/question/24855677

6 0
2 years ago
−8 3/4÷2 1/6 please show me ur work
nalin [4]

Answer:

  • - 4 1/26

Step-by-step explanation:

<u>Solving in steps:</u>

  • - 8 3/4 ÷ 2 1/6 =
  • - 35/4 ÷ 13/6 =
  • - 35/4 × 6/13 =
  • - 35/2 × 3/13 =
  • - 105/26 =
  • - 4 1/26
6 0
3 years ago
Can u help me solve this pls
lisov135 [29]
Answer:

First option: (Substitute)

2x+3 (x+1.5) = 12
3 0
2 years ago
Read 2 more answers
5. Luis found a new text messaging plan which will charge him $2.00 for 80 messages. Using this
Pavel [41]
I think that Luis would have to pay $22.50
7 0
2 years ago
If f(x)=7x what is the inverse of f(x)
Brums [2.3K]

Answer:

f(x)=x/7

Step-by-step explanation:

f(x)=7x

y=7x

x=7y (switch y and x for inverse)

x=7y (isolate y)

x/7=y

The inverse of f(x)=7x is f(x)=x/7

8 0
3 years ago
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