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CaHeK987 [17]
3 years ago
10

35. Cindy walks at a constant rate of 2 miles per hour. She leaves home to walk to her friend Jenny's house at 9 am. When she is

halfway there, she thinks that she left her phone at home. She turns around and begins to walk back home, but when she is halfway home (from where she turned around), she finds her phone. She turns back around to walk to Jenny's and arrives there at 10 am. How far apart are Cindy's house and Jenny's house?
Hint: Draw a diagram!
Mathematics
1 answer:
GarryVolchara [31]3 years ago
8 0

Answer:

you're screwed

Step-by-step explanation:

don't forget your phone so anyon doesn't ever have to do this

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fiasKO [112]

Answer: 0.861

Step-by-step explanation:

The confidence interval for population mean (\mu) is given by :-

\overline{x}\pm t_c\dfrac{s}{\sqrt{n}} , where n=sample size

\overline{x}= sample mean

s=sample standard deviation

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Let  \mu be the confidence interval for the population mean mercury concentration.

As per given , we have

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Sample standard deviation : s= 0.0036

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Critical two-tailed test value :

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We assume the population is approximately normal.

Now, the 98% confidence interval for the population mean mercury concentration will be :-

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