Answer:
1) Fail to reject the Null hypothesis
2) We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.
Step-by-step explanation:
A university administrator wants to test if there is a difference between the distance men and women travel to class from their current residence. So, the hypothesis would be:
![H_{o}: \mu_{F}-\mu_{M}=0\\\\ H_{a}: \mu_{F}-\mu_{M}\neq 0](https://tex.z-dn.net/?f=H_%7Bo%7D%3A%20%5Cmu_%7BF%7D-%5Cmu_%7BM%7D%3D0%5C%5C%5C%5C%20H_%7Ba%7D%3A%20%5Cmu_%7BF%7D-%5Cmu_%7BM%7D%5Cneq%200)
The results of his tests are:
t-value = -1.05
p-value = 0.305
Degrees of freedom = df = 21
Based on this data we need to draw a conclusion about test. The significance level is not given, but the normally used levels of significance are 0.001, 0.005, 0.01 and 0.05
The rule of the thumb is:
- If p-value is equal to or less than the significance level, then we reject the null hypothesis
- If p-value is greater than the significance level, we fail to reject the null hypothesis.
No matter which significance level is used from the above mentioned significance levels, p-value will always be larger than it. Therefore, we fail to reject the null hypothesis.
Conclusion:
We do not have sufficient evidence to support the claim that the mean distance students traveled to school from their current residence was different for males and females.
Answer:
x=5
y=4
Step-by-step explanation:
Step 1:
Let us solve for <em>x</em> using the
equation by <u>isolating terms containing the variable</u>:
![4x-7=13\\4x=20\\\fbox{x=5}](https://tex.z-dn.net/?f=4x-7%3D13%5C%5C4x%3D20%5C%5C%5Cfbox%7Bx%3D5%7D)
Great! <em>x</em> is 5... let's find <em>y</em>.
Step 2:
Since we know the value of <em>x</em>, we can use what we know to find <em>y</em> using the <u>other equation</u>:
![5x-2y=17\\](https://tex.z-dn.net/?f=5x-2y%3D17%5C%5C)
<em>Given that x=5, we can </em><u><em>replace</em></u><em> x with 5</em>.
![5*5-2y=17\\25-2y=17\\2y=8\\\\\fbox{y=4}](https://tex.z-dn.net/?f=5%2A5-2y%3D17%5C%5C25-2y%3D17%5C%5C2y%3D8%5C%5C%5C%5C%5Cfbox%7By%3D4%7D)
<em>I hope this helps! Let me know if you have any questions :)</em>
Answer:
<u>a= -4</u>
Step-by-step explanation:
subtract 4a from both sides
add 15 to both sides
divide both sides by -3
(order of operations)
2 1/2 because you divide the 15 by 6 and 2 R.3 3 is half of 6 so you make it a half leaving you with 2.5 or fraction form:2 1/2