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zhannawk [14.2K]
3 years ago
14

The cost of renting a boat is $51 for 5 hours. Which of the following is not an equivalent rate? Give the letter of your answer

and justify your answer. Show your work.
A. $61.20 for 6 hours

B. $30.60 for 3 hours

C. $71.40 for 7 hours

D. $41.20 for 4 hours
Mathematics
1 answer:
alexgriva [62]3 years ago
4 0
B. Obviously all the numbers have to do with one and it’s 30. If it’s wrong let me know !
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(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=
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Answer:

The 99% confidence interval is  71.67 < \mu < 78.33

Step-by-step explanation:

From the question we are told that

     The sample  size  is  n  =  15

      The  sample  mean is  \= x  =  75

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Generally the margin for error is mathematically represented as

            E =  Z_{\frac{ \alpha }{2} } *  \frac{ s}{ \sqrt{n} }

=>         E =  2.58  *  \frac{ 5}{ \sqrt{15} }

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   The  99% confidence interval is mathematically represented as

             \= x  -E  <  \mu  <  \= x  +E

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=>          71.67 < \mu < 78.33

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