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LuckyWell [14K]

3 years ago

12

A store sold a certain brand of jeans for $38 one day, the store sold 6 pair of jeans of that brand. How much did the 6 pairs of

jeans cost?

2 answers:

denis-greek [22]3 years ago

5 0

228 Because 38 x 8 = 228.

4
38
x 6
____

228

baherus [9]3 years ago

4 0

6 pairs of jeans would cost $228.

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A new test to detect TB has been designed. It is estimated that 88% of people taking this test have the disease. The test detect

Elodia [21]

Answer:

Correct option: (a) 0.1452

Step-by-step explanation:

The new test designed for detecting TB is being analysed.

Denote the events as follows:

<em>D</em> = a person has the disease

<em>X</em> = the test is positive.

The information provided is:

$P(D)=0.88\\P(X|D)=0.97\\P(X^{c}|D^{c})=0.99$

Compute the probability that a person does not have the disease as follows:

$P(D^{c})=1-P(D)=1-0.88=0.12$

The probability of a person not having the disease is 0.12.

Compute the probability that a randomly selected person is tested negative but does have the disease as follows:

$P(X^{c}\cap D)=P(X^{c}|D)P(D)\\=[1-P(X|D)]\times P(D)\\=[1-0.97]\times 0.88\\=0.03\times 0.88\\=0.0264$

Compute the probability that a randomly selected person is tested negative but does not have the disease as follows:

$P(X^{c}\cap D^{c})=P(X^{c}|D^{c})P(D^{c})\\=[1-P(X|D)]\times{1- P(D)]\\=0.99\times 0.12\\=0.1188$

Compute the probability that a randomly selected person is tested negative as follows:

$P(X^{c})=P(X^{c}\cap D)+P(X^{c}\cap D^{c})$

$=0.0264+0.1188\\=0.1452$

Thus, the probability of the test indicating that the person does not have the disease is 0.1452.

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3 years ago

20 POINTS<br><br> Part E<br> How many of the 320 million Americans would you predict wear glasses?

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About 164 million U.S. adults

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2 years ago

What is 35/75 reduced to

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<span>35 / 75 =
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3 years ago

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shtirl [24]

Solution:

<u>Step-1: Find the data.</u>

70's: 1
80's: 1
90's: 2
100's: 3
110's: 4
120's: 4
130's: 2
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Data obtained (Smallest to biggest):

70, 80, 90, 90, 100, 100, 100, 110, 110, 110, 110, 120, 120, 120, 120, 130, 130, 140

<u>Step-2: Count the number of digits.</u>

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<u>Step-3: Use the formula "Total digits/2".</u>

18/2 = 9th digit

The 9th digit in the data is the median.

<u>Step-4: Revise the data.</u>

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mr Goodwill [35]

Answer:

C

Step-by-step explanation:

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3 years ago