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Verdich [7]
3 years ago
10

The answer to this question ^

Mathematics
1 answer:
zzz [600]3 years ago
6 0
The answer is A. FDR is referring to the Axis powers, which were located in Europe.
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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
When i triple my numberand subtract by 3 u get 83
sergeinik [125]
Laugh out loud a pun isn't it
3 0
3 years ago
Simplify the expression 8(2x - 6y + 3) using the distributive property. *
yawa3891 [41]

Answer:

16x - 48y +24

Step-by-step explanation:

We can use the distributive property to expand:

  1. 8(2x - 6y + 3)
  2. 8 x 2x - 8 x 6y + 8 x 3
  3. 16x - 48y + 24

Hope this helps!!

7 0
2 years ago
Read 2 more answers
contestants in a dance-a-thon rest for the same amount of time every hour.a couple rests for 25 minutes in 5 hours.how long did
vladimir1956 [14]

Answer

Find out the how long did they rest in 8 hours.

To prove

As given

contestants in a dance-a-thon rest for the same amount of time every hour.

A couple rests for 25 minutes in 5 hours .

As

25 mintues = 5 hours

1\ hours = \frac{25}{5}\ mintues

1 hours = 5 mintues

Thus in 1hours a the dance -a-thon rest for 5 mintues.

Now for 8 hours.

8 hours = 8 × 5 mintues

           = 40 mintues

Therefore in 8 hours  a dance-a-thon rest for 40 mintues.




3 0
3 years ago
Read 2 more answers
Andrea runs 218.4 meters in 31.04 seconds
uranmaximum [27]

Answer:

can you explain the questin more clearly pleaseee

Step-by-step explanation:

7 0
3 years ago
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