Answer:
The pvalue of 0.0113 < 0.05 means that there is sufficient evidence to conclude that the mean time to find another position is less than 28 weeks at the 5% level of significance
Step-by-step explanation:
The null hypothesis is:
![H_{0} = 28](https://tex.z-dn.net/?f=H_%7B0%7D%20%3D%2028)
The alternate hypotesis is:
![H_{1} < 28](https://tex.z-dn.net/?f=H_%7B1%7D%20%3C%2028)
The test statistic is:
![z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%7D)
In which X is the sample mean,
is the value tested at the null hypothesis,
is the standard deviation and n is the size of the sample.
A recent survey of 50 executives who were laid off during a recent recession revealed it took a mean of 26 weeks for them to find another position.
This means that ![n = 50, X = 26](https://tex.z-dn.net/?f=n%20%3D%2050%2C%20X%20%3D%2026)
Assume the population standard deviation is 6.2 weeks.
This means that ![\sigma = 6.2](https://tex.z-dn.net/?f=%5Csigma%20%3D%206.2)
Does the data provide sufficient evidence to conclude that the mean time to find another position is less than 28 weeks at the 5% level of significance
We have to find the pvalue of Z, looking at the z-table, when
. It if is lower than 0.05, it provides evidence.
![z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%7D)
![z = \frac{26 - 28}{\frac{6.2}{\sqrt{50}}}](https://tex.z-dn.net/?f=z%20%3D%20%5Cfrac%7B26%20-%2028%7D%7B%5Cfrac%7B6.2%7D%7B%5Csqrt%7B50%7D%7D%7D)
![z = -2.28](https://tex.z-dn.net/?f=z%20%3D%20-2.28)
has a pvalue of 0.0113 < 0.05.
The pvalue of 0.0113 < 0.05 means that there is sufficient evidence to conclude that the mean time to find another position is less than 28 weeks at the 5% level of significance
Answer:
$-17
Step-by-step explanation:
Well, she has $28, and wants to get a loan for a pair of shoes. That means she will have negative money in her account. This is because $45 is greater than $28 and the $28 is the one being taken from. This leaves the answer to be $-17.
Answer:
hi! im sorry if this is wrong, im gonna try my hardest.
V= 160
L= 240
W=34
sry this is prob wrong just wanted to help ;(
Answer:
mode is the highest occuring number
7342 none of the numbers appeared twice
: 7 is the highest occuring number