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andreyandreev [35.5K]
2 years ago
14

Tarinda's corn plant was 7- 1/3 inches tall at the end of Week 1. The corn plant was 18 1/2 inches tall at the end of Week 2. Ho

w many inches did the corn plant grow during Week 2?
Mathematics
1 answer:
liberstina [14]2 years ago
5 0

Answer:

The corn plant grew by 11.17 inches during week 2.

Step-by-step explanation:

7 and 1/3 inches tall at the end of Week 1.

The height at the end of week 1, as a simple fraction, is:

7 + \frac{1}{3} = \frac{3*7 + 1}{3} = \frac{22}{3}

The corn plant was 18 1/2 inches tall at the end of Week 2.

At the end of week 2, the height will be of:

18 + \frac{1}{2} = \frac{18*2+1}{2} = \frac{37}{2}

How many inches did the corn plant grow during Week 2?

Height at the end of week 2 subtracted by the height at the end of week 1. So

\frac{37}{2} - \frac{22}{3} = \frac{3*37-2*22}{6} = \frac{67}{6} = 11.17

The corn plant grew by 11.17 inches during week 2.

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Step-by-step explanation:

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n=0.5(1-0.5)\times (2.576/0.02)^2\\\\=4147.36\approx 4148

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b. If given a preliminary estimate p=0.38, we use the same formula but substitute p with the given value:

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Hence, the actual sample size is smaller for a known proportion from prior a prior study.

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