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photoshop1234 [79]
3 years ago
8

Previous Question 24 Next = Question 24 Karli bought 2.5 pounds of beef each week for 4 weeks. She paid $3.30 per pound for beef

. How much did Karli spend on beef after 4 weeks?​
Mathematics
2 answers:
Vlada [557]3 years ago
7 0

How to use techniques of adding the additive inverse and multiplying by the  Students use algebra to solve equations (of the form px + q = r and p(x + q) = r where p pay with a $10 bill and receive no change, then how much did each bottle of a. If Allen buys 4 uniform shirts at one time, he gets a $10 discount so that the

Lesechka [4]3 years ago
6 0

Answer:

She spent $33

Step-by-step explanation:

2.5 x $3.30= $8.25 spent per week

$8.25 x 4= $33 spent after 4 weeks.

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A random sample of 200 voters in a town is selected, and 114 are found to support an annexa- tion suit. Find the 96% confidence
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a) 96% CI: 0.51\leq\pi\leq 0.63

b) If we estimate that the fraction of voters is 0.57, we can claim with 96% confidence that the error is equal or less than 0.06 from the estimated proportion.

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The proportion of the sample is

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The standard deviation of the sample proportion is

\sigma=\sqrt{\frac{p(1-p)}{n} } =\sqrt{\frac{0.57(1-0.57)}{200} } =\sqrt{\frac{0.2451}{200} } =0.035

For a 96% CI, the z-value is z=1.751.

Then, the 96% CI can be written as:

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b) If we estimate that the fraction of voters is 0.57, we can claim with 96% confidence that the error is equal or less than 0.06 from the estimated proportion.

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