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charle [14.2K]
2 years ago
13

4. If b books cost $9.25 and p pens cost $1.30

Mathematics
1 answer:
Brilliant_brown [7]2 years ago
5 0

Step-by-step explanation:

A. One book =$9.25÷b

=$9.25/b

B.One pen=$1.30÷p

=$1.30/p

C. One book+One book

=[($9.25÷b)+($1.30÷p)]÷($9.25+$1.30)

=[(&9.25/b)+($1.30/p)]/($10.55)

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A TV report conducted a survey of 947 people in New York City and found that 35% of the population believe that the Yankees will
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Answer:

35\% represents the sample proportion of the population

Step-by-step explanation:

From the question we are told that

   The sample size is  n  = 947

   The proportion of the population that believes that the Yankees will miss the playoffs this year is    k = 35\% = 0.35

From the question we are told the confidence level is  97%

   The lower limit of the confidence level is a = 28%

    The upper limit of the  b = 42%

Generally the sample proportion of this population is mathematically represented as

         \^ p = \frac{a+ b}{2}

=>      \^ p = \frac{28 + 42 }{2}

=>      \^ p = 35\%

Hence  35\% represents the sample proportion

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