91影视

It is given that $\stackrel{炉}{x}=0.975$

Claim is mean is less than $1$.

- The claim can be the null hypothesis or the alternative hypothesis.

- The null hypothesis statement is that population mean is equal to the value given in the claim.

- If the null hypothesis is the claim, then the alternative hypothesis statement is opposite of the null hypothesis.

$H_0:渭=1$

$H_1:渭<1$

Some proof for alternative hypothesis is there. It is because sample mean is less than one pound. It also corresponds with claim of alternative hypothesis that mean is less than one pound.

Claim is mean is less than $1$pound.

Null Hypothesis: Population value is equal to value in claim.

$H_0:渭=1$

The claim can be the null hypothesis or the alternative hypothesis. The null hypothesis is that the population mean is equal to the value given in the claim.

If the null hypothesis is the claim, then the alternative hypothesis statement will be the opposite of the null hypothesis.

$H_1:渭<1$ ($渭$ is mean weight of all bread loaves.)

$\stackrel{炉}{x}=0.975$

CLAIM: Mean is less than $1$.

$P=0.0806=8.06\%$

As explained above

$H_0:渭=1$

$H_1:渭<1$

When null hypothesis is true, $P$value is probability of getting the sample results or extreme results.

Therefore, $8.06\%$ possibility that the mean weight of a simple random sample of bread loaves which is $0.975$ pound or more extreme, when the mean weight of all bread loaves is actually one pound.

It is given that $\stackrel{炉}{x}=0.975$

$P=0.0806=8.06\%$

$伪=0.01$

CLAIM: Mean is less than one.

From above:

$H_0:渭=1$

$H_1:渭<1$

Here, $0.0806>0.01鈬�\text{Fail to eject}{H}_0$

So, there is no convincing proof that mean weight is less than one pound.