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2 years ago

What is 11 divided by 1/4

Mathematics

2 answers:

jasenka [17]2 years ago

7 0

44 i think if not really sorry

Aneli [31]2 years ago

4 0

Answer:2.75

Step-by-step explanation:

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What is the effect on the graph of the function f(x) =

WINSTONCH [101]

I’m pretty sure the answer of this is C

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3 years ago

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MissTica

I've done the first four questions. Use this method to answer the rest. For an odd number of objects find the cost of one and multiply by how many you are asked to find.

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3 years ago

Which of the following units are units of volume? Select all that apply.

oksano4ka [1.4K]

Answer:

we have these we ml and l

Step-by-step explanation:

Here, we want to select the units of volume ;

1. mg

This is a measure of mass and in fact it is called milligrams

2. mm

This is called millimeters and in fact is a measure of distance

3. cm

This is centimeters and it is a measure of distance too

4. ml

Milliliters, this is a measure of volume

5. m

meters;

this is a measure of distance

6. g

grammes

This is a measure of mass

7. l

This is liters

It is actually a measure of volume

8. km

this is kilometers, it is a measure of distance

7 0

3 years ago

Jane has $1 and 8 dimes in her pile. Harrison has 18 dimes in his pile. If Jane gives Harrison $1 and

zimovet [89]

Answer:

Yes, the two piles will still be equal in value.

Step-by-step explanation:

10 dimes = $1

7 0

3 years ago

A random sample of 20 students yielded a mean of ¯x = 72 and a variance of s2 = 16 for scores on a college placement test in mat

Helen [10]

Answer:

The 98% confidence interval for the variance in the pounds of impurities would be $8.400 \leq \sigma^2 \leq 39.827$ .

Step-by-step explanation:

1) Data given and notation

$s^2 =16$ represent the sample variance

s=4 represent the sample standard deviation

$\bar x$ represent the sample mean

n=20 the sample size

Confidence=98% or 0.98

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population mean or variance lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

The Chi square distribution is the distribution of the sum of squared standard normal deviates .

2) Calculating the confidence interval

The confidence interval for the population variance is given by the following formula:

$\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma^2 \leq \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}$

On this case the sample variance is given and for the sample deviation is just the square root of the sample variance.

The next step would be calculate the critical values. First we need to calculate the degrees of freedom given by:

$df=n-1=20-1=19$

Since the Confidence is 0.98 or 98%, the value of $\alpha=0.02$ and $\alpha/2 =0.01$ , and we can use excel, a calculator or a table to find the critical values.