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Dovator [93]
2 years ago
10

WILL GIVE BRAINLIEST!!

Mathematics
2 answers:
alexandr402 [8]2 years ago
7 0

its the 3rd answer!

hope this helps

Studentka2010 [4]2 years ago
3 0

Answer:

x is less than 3 b is the answer

Step-by-step explanation:

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Differentiate with respect to x (6-2x)^3​
olga55 [171]
-6(6-2x)^2 by chain rule
6 0
1 year ago
Read 2 more answers
The Commutative Property of Addition would say<br> 3y + 6 = _______
spayn [35]

Answer:

6 + 3y

Step-by-step explanation:

a + b = b + a

Numbers can be added in any order, and you still get the same answer

3 0
2 years ago
In Hamilton County, Ohio the mean number of days needed to sell a home is days (Cincinnati Multiple Listing Service, April, 2012
Diano4ka-milaya [45]

Answer:

t=\frac{80-86}{\frac{20}{\sqrt{40}}}=-1.8974    

p_v =2*P(t_{39}

If we compare the p value with a significance level given \alpha=0.05 we see that p_v>\alpha so we can conclude that we FAIL to reject the null hypothesis, so there is not enough evidence to conclude that the mean for the data is significantly different from 86 days.    

Step-by-step explanation:

Assuming the following problem: "In Hamilton County, Ohio the mean number of days needed to sell a home is 86 days (Cincinnati Multiple Listing Service, April, 2012). Data for the sale 40 of homes in a nearby county showed a sample mean of 80 days with a sample standard deviation of 20 days. Conduct a hypotheses test to determine whether the mean number of days until a home is sold is different than the Hamilton county mean of 86 days in the nearby county. "

1) Data given and notation    

\bar X=80 represent the sample mean

s=20 represent the sample standard deviation

n=40 sample size    

\mu_o =86 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)    

p_v represent the p value for the test (variable of interest)

2) State the null and alternative hypotheses.    

We need to conduct a hypothesis in order to determine if the mean is different from 86, the system of hypothesis would be:    

Null hypothesis:\mu = 86    

Alternative hypothesis:\mu \neq 86    

We don't know the population deviation, so for this case we can use the t test to compare the actual mean to the reference value, and the statistic is given by:    

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)    

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

3) Calculate the statistic    

We can replace in formula (1) the info given like this:    

t=\frac{80-86}{\frac{20}{\sqrt{40}}}=-1.8974    

4) Calculate the P-value    

First we need to find the degrees of freedom given by:

df=n-1=40-1=39

Since is a two tailed test the p value would be:    

p_v =2*P(t_{39}

In Excel we can use the following formula to find the p value "=2*T.DIST(-1.8974,39,TRUE)"  

5) Conclusion    

If we compare the p value with a significance level given \alpha=0.05 we see that p_v>\alpha so we can conclude that we FAIL to reject the null hypothesis, so there is not enough evidence to conclude that the mean for the data is significantly different from 86 days.    

7 0
3 years ago
A plane flew at a constant speed and traveled 762762762 miles in 555 hours.
ivann1987 [24]

Answer:

457657657.2

Step-by-step explanation:

(762762762/5)*3=457657657.2 miles

7 0
3 years ago
Which equation represents the relationship 3 less than a number is -6
Phantasy [73]
X-3=-6
if you take away 3 from a number, you will get -6
x=-3

5 0
3 years ago
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