3 years ago

How many students in the survey said that math was their favorite subject?

Mathematics

1 answer:

vaieri [72.5K]3 years ago

6 0

Answer:20

Step-by-step explanation:

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3 years ago

What is the opposite reciprocal of 2/3?

Gekata [30.6K]

Answer:

$\frac{3}{2}$ if you're asking for the reciprocal.

$\frac{2}{3}$ if you're asking the opposite of a reciprocal.

Step-by-step explanation:

The reciprocal is the number flipped or in this case $\frac{3}{2}$

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Answer:

0.961

Step-by-step explanation:

To answer this, find the area under the standard normal curve to the left of 130 pounds:

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3 years ago

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Answer:

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3 years ago

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The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean

LiRa [457]

Answer:

$P(X\geq 3.4)=0.0228$

Step-by-step explanation:

Given the mean is 3.2, standard deviation is 0.8 and the sample size is 64.

-We calculate the probability of a mean of 3.4 as follows:

#First determine the z-value:

$z=\frac{\bar X -\mu}{\sigma/\sqrt{n}}\\\\=\frac{3.4-3.2}{0.8/\sqrt{64}}\\\\=2.000$

#We then determine the corresponding probability on the z tables:

$Z(X\geq 3.4)=1-P(X$

Hence, the probability of obtaining a sample mean this large or larger is 0.0228

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