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2 years ago

What is 2 3/4 dived by 3

Mathematics

1 answer:

aliya0001 [1]2 years ago

6 0

Answer:

0.91666666666 hope this helps

just literally divide

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The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident th

Aleks04 [339]

Answer:

The minimum sample size that can be taken is of 14 dogs.

Step-by-step explanation:

The formula for calculating the minimum sample size to estimate a population mean is given by:

$n=\frac{z^{2}\sigma^{2}}{e^{2}}$

The first step is obtaining the values we're going to use to replace in the formula.

Since we want to be 95% confident, $1-\alpha=0.95 \Rightarrow \alpha=0.05$ .

Therefore we look for the critical value $z_{\alpha/2}=1.96$ .

Then we calculate the variance:

$\sigma = 3.7 \Rightarrow \sigma^{2}=13.69$

And we have that:

$e=2 \Rightarrow e^{2}=4$

Now we replace in the formula with the values we've just obtained:

$n=\frac{1.96^{2}*13.69}{4}=13.1479\approx 14$

Therefore the minimum sample size that can be taken to guarantee that the sample mean is within 2 inches of the population mean is of 14 dogs.

6 0

3 years ago

25° 35° to 205° circle

Lisa [10]

Answer:

x = 60

Step-by-step explanation:

the chord- chord angle x is half the sum of the measures of the arcs intercepted by the angle and its vertical angle.

The sum of the arcs in a circle = 360° , then

intercepted arc = 360° - (35 + 25 + 205)° = 360° - 265° = 95°

then

x = $\frac{1}{2}$ (95 + 25 ) = $\frac{1}{2}$ × 120 = 60

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2 years ago

What’s 3•5+-5•4 And the dot is multiplication!

NeTakaya

-5 is the answer ...............

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3 years ago

I'll go on a date with anyone who can answer this and help me...?

vesna_86 [32]

Answer:

Chill is this a multiple choice?

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3 years ago

kelly will roll a number cube labeled 1 to 6. what is the probability kelly will roll a number greater than 3?

guapka [62]

Answer:

%50

Step-by-step explanation:

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2 years ago

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