So at this rate how many pints can you afford for $20.00

1 2 3 4 5 6 7 8 9 10 In what type of economy does the government try to control all factors of production? A. traditional B. com

kondaur [170]

Answer: C. market

Step-by-step explanation:

8 0

3 years ago

A manufacturer uses production method to produce steel rods. A random sample of 17 steel rods resulted in lengths with a standar

Arisa [49]

Answer:

$\chi^2 =\frac{17-1}{12.15} 22.09 =15.87$

Traditional method

We can find a critical value in the chi square distribution with df =16 who accumulates $\alpha/2 =0.05$ of the area on each tail and we got:

$\chi^2_{crit}= 7.962$

$\chi^2_{crit}=26.296$

Since the calculated value is between the two critical values we don't have enough evidence to conclude that the true deviation is NOT significantly different from 3.5 cm

Confidence level method

We can find the p value like this

$p_v =2*P(\chi^2 >15.87)=0.92$

Since the p value is higher then the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true deviation is NOT significantly different from 3.5 cm

Step-by-step explanation:

Data provided

$n=17$ represent the sample selected

$\alpha=0.1$ represent the significance

$s^2 =4.7^2 =22.09$ represent the sample variance

$\sigma^2_0 =3.5^2 =12.15$ represent the value to check

Null and alternative hypothesis

We want to verify if the new production method has lengths with a standard deviation different from 3.5 cm, so the system of hypothesis would be:

Null Hypothesis: $\sigma^2 = 12.15$

Alternative hypothesis: $\sigma^2 \neq 12.15$

The statistic for this case is given by:

$\chi^2 =\frac{n-1}{\sigma^2_0} s^2$

The degrees of freedom are:

$df =n-1= 17-1=16$

$\chi^2 =\frac{17-1}{12.15} 22.09 =15.87$

Traditional method

We can find a critical value in the chi square distribution with df =16 who accumulates $\alpha/2 =0.05$ of the area on each tail and we got:

$\chi^2_{crit}= 7.962$

$\chi^2_{crit}=26.296$

Since the calculated value is between the two critical values we don't have enough evidence to conclude that the true deviation is significantly different from 3.5 cm

Confidence level method

We can find the p value like this

$p_v =2*P(\chi^2 >15.87)=0.92$

Since the p value is higher then the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true deviation is significantly different from 3.5 cm

7 0

3 years ago

The sum of an integer n and four is equal to the difference of ten and two.What is the value of n?

Gekata [30.6K]

Answer:

n=4

Step-by-step explanation:

Attachment has my work.

4 0

3 years ago

Simplify each expression <br><br> (-0.75x + 6) - (2.5x - 1.9)

Nataly [62]

This is the answer to your problem

8 0

3 years ago

Can yall help me on like a million questions? (I had to put the other questions in a different question if you want to do those

Naddik [55]

Answer:

answer is 94/14

Step-by-step explanation:

you got to make the number into a mixed number but anyways you just mutiply the denominator to the whole number then add the numbrator so you have 58/14+18/7 then in order to add you have to make sure the denominator is the same so change the 18/7 into 14 denominator so u got to mutiply 7 by 2 so u got to do that to the 18 to then finally u add

7 0

3 years ago