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bogdanovich [222]
2 years ago
13

Seth bakes 100 cookies in 2 hours. Erika bakes 200 cookies in 2.5 hours.

Mathematics
2 answers:
kakasveta [241]2 years ago
8 0
I think the answer is A.

Write the rate at which each person is baking cookies
lana [24]2 years ago
7 0
A: 50 cookies an hour (seth) 80 cookies an hour (erika)
b: 50:1 80:1
c: Seth, he bakes more in an hour
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A local cable company claims that the proportion of people who have Internet access is less than 63%. To test this claim, a rand
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Answer:

Step-by-step explanation:

For the null hypothesis,

H0 : p = 0.63

For the alternative hypothesis,

Ha : p < 0.63

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q = probability of failure = 1 - p

q = 1 - 0.63 = 0.37

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2 years ago
A homemade lip balm consists of coconut oil and beeswax. Coconut oil costs $0.50 per ounce and beeswax costs $2.00 per ounce. If
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Let

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2 years ago
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A researcher wants to estimate the mean weekly family expenditure on clothing purchases and maintenance. First, she needs to det
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Answer: C. 461

Step-by-step explanation:

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n=(\dfrac{z^*\cdot \sigma}{E})^2

, where \sigma = Population standard deviation from prior study.

E = margin of error.

z* = Critical value.

As per given , we have

\sigma=125

E= 15

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Critical value (Two tailed)=z^*=z_{\alpha/2}=z_{0.005}=2.576

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Hence, the required sample size to be taken is 461.

Correct answer = C. 461

3 0
2 years ago
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