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3 years ago

10

Fred wants to make brownies. To make brownies, he needs 1/4 of a cup of flour per batch of brownies. If Fred has 10 cups of flou

r, how many batches of brownies can he make?

1 answer:

Jet001 [13]3 years ago

8 0

he can make like nine batches so ya ya ya ya ya Step-by-step explanation:

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9 What is the volume of the cone below? * 267.95 in3 33.49 in3 133.97 in3

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Answer:

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Step-by-step explanation:

Missing information;

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3 years ago

The U.S. Department of Education reported that in 2007, 67% of students enrolled in college or a trade school within 12 months o

MrRissso [65]

Answer:

a) The 90% confidence interval is $0.575\leq \pi\leq 0.701$

b) The margin of error is 0.063.

Step-by-step explanation:

We have to construct a 90% confidence interval for the proportion of students enrolled in college or a trade school within 12 months of graduating from high school in 2013.

We have a sample of 160 students, and a proportion of:

$p=X/N=102/160=0.6375$

The standard deviation is:

$\sigma=\sqrt{\frac{p(1-p)}{N}}=\sqrt{\frac{0.6375*0.3625}{160}}=0.038$

As the sample size is big enough, we use the z-value as statistic. For a 90% CI, the z-value is z=1.645.

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$E=z\cdot\sigma=1.645\cdot 0.038=0.063$

Then, the 90% confidence interval is:

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3 years ago