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ohaa [14]
3 years ago
15

What is the conditional relative frequency of selling an item marked 50% off, provided the item sold is item 2?

Mathematics
1 answer:
sukhopar [10]3 years ago
8 0

Answer:

Conditional relative frequency = 0.67

Step-by-step explanation:

               50% off        Buy 1, get 1 free      Total

Item 1         12                       8                      20

Item 2         20                      10                     30

Total           32                      18                     50

Condition relative frequency table:

               50% off        Buy 1, get 1 free      Total

Item 1         \frac{12}{20}=0.6             \frac{8}{20}=0.4            \frac{20}{20}=1

Item 2        \frac{20}{30}=0.67           \frac{10}{30}=0.33          \frac{30}{30}=1

Total            \frac{32}{50}=0.64           \frac{18}{50}=0.36          \frac{50}{50}=1

Therefore, conditional relative frequency of selling an item marked 50% off, provided the item sold is item 2 = 0.67

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Step-by-step explanation:

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4.67=x

width=4.67

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Y = -3x + 5? *<br> What’s the slope of the equation y =-3x+5
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Step-by-step explanation:

The formula is y= mx + b

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3 years ago
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Two fair dice, one blue and one red, are tossed, and the up face on each die is recorded. Define the following events:
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Answer:

Step-by-step explanation:

Given that two fair dice, one blue and one red, are tossed, and the up face on each die is recorded.

a) P(E) = P(the difference of the numbers is 3 or more}

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Construct the confidence interval for the population mean mu. c = 0.90​, x = 16.9​, s = 9.0​, and n = 45. A 90​% confidence inte
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Answer:

The  90%  confidence interval for population mean is   14.7  <  \mu  <  19.1

Step-by-step explanation:

From the question we are told that

   The sample mean is  \= x  =  16.9

    The confidence level is  C  =  0.90

     The sample size is  n  =  45

     The standard deviation

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       \alpha =  1-0.90

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  Generally the margin of error is mathematically evaluated as

        MOE  =  Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }

substituting values

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The  90%  confidence level interval is mathematically represented as

      \= x  -  MOE  <  \mu  <  \= x  +  MOE

substituting values

     16.9 -  2.207  <  \mu  <  16.9 +  2.207

    16.9 -  2.207  <  \mu  <  16.9 +  2.207

     14.7  <  \mu  <  19.1

         

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3 years ago
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