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-BARSIC- [3]
3 years ago
11

Can you plz solve it

Mathematics
2 answers:
mash [69]3 years ago
7 0

Answer:

c & d

Step-by-step explanation:

tekilochka [14]3 years ago
5 0
C & d ___________________________
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What is the simplified version of the expression [(5-1)^2+3^2]/(30 / 6)
VARVARA [1.3K]

Answer:

Exact form is \frac{16}{5} +\frac{3^2}{5}

the decimal form is 5

Step-by-step explanation:

4 0
3 years ago
Please really need help
zavuch27 [327]

Answer:

IDK

Step-by-step explanation:

IDK

6 0
4 years ago
ANSWER THIS TO GET 20 POINTS<br><br> what does a ratio of 2:1 mean
sdas [7]

Answer:

It means 2/1

Step-by-step explanation:

For example if YIU say the ratio girls to boys is 2 to 1 then you are there are 2 girls to 1 boy

7 0
3 years ago
The sugar content of the syrup in canned peaches is normally distributed. A random sample of n = 10 cans yields a sample standar
Serggg [28]

Answer:

The 95% confidence interval is given by:

3.30<σ<8.76

Step-by-step explanation:

1) Data given and notation

s=4.798 represent the sample standard deviation

\bar x represent the sample mean

n=10 the sample size

Confidence=95% or 0.95

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}}

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

df=n-1=10-1=9

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a tabel to find the critical values.  

The excel commands would be: "=CHISQ.INV(0.025,9)" "=CHISQ.INV(0.975,9)". so for this case the critical values are:

\chi^2_{\alpha/2}=19.022

\chi^2_{1- \alpha/2}=2.700

And replacing into the formula for the interval we got:

\frac{(9)(4.798)^2}{19.022} \leq \sigma \frac{(9)(4.798)^2}{2.700}

10.892 \leq \sigma^2 \leq 76.736

Now we just take square root on both sides of the interval and we got:

3.30 \leq \sigma \leq 8.76

So the best option would be:

3.30<σ<8.76

7 0
3 years ago
Whitney's balcony is 3 feet wide and 6 feet long. Whitney paid $4.00 per square foot to have the balcony stained. How much did s
stepan [7]

Answer:

She paid 72 dollars

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
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