All categories

1 year ago

Solve: 2a + 6 = 12 a =

Mathematics

1 answer:

Alex Ar [27]1 year ago

5 0

Answer:

Step-by-step explanation:

because hhhhhh

gghhhh

jkkkkk

lllll

vvvvv

dddfff

oooooo

eeeerer

kkkkkk

lllll.ssss

You might be interested in

Consider the following hypothesis test.H0:μ1−μ2=0 Ha:μ1−μ2≠0The following results are for two independent samples taken from the

Julli [10]

Answer:

a) $z =\frac{104-106}{\sqrt{\frac{8.4^2}{80} +\frac{7.6^2}{70}}}= -1.53$

b) $p_v =2*P(z$

c) Since the p value is higher than the significance level provided we have enogh evidence to FAIL to reject the null hypothesis and we can't conclude that the true means are different at 5% of significance

Step-by-step explanation:

Information given

$\bar X_{1}= 104$ represent the mean for 1

$\bar X_{2}= 106$ represent the mean for 2

$\sigma_{1}= 8.4$ represent the population standard deviation for 1

$\sigma_{2}= 7.6$ represent the population standard deviation for 2

$n_{1}=80$ sample size for the group 1

$n_{2}=70$ sample size for the group 2

z would represent the statistic

Hypothesis to test

We want to check if the two means for this case are equal or not, the system of hypothesis would be:

H0: $\mu_{1}=\mu_{2}$

H1: $\mu_{1} \neq \mu_{2}$

The statistic would be given by:

$z =\frac{\bar X_1-\bar X_2}{\sqrt{\frac{\sigma^2_1^2}{n_1} +\frac{\sigma^2_2^2}{n_2}}}=$ (1)

Part a

Replacing we got:

$z =\frac{104-106}{\sqrt{\frac{8.4^2}{80} +\frac{7.6^2}{70}}}= -1.53$

Part b

The p value would be given by this probability:

$p_v =2*P(z$

Part c

Since the p value is higher than the significance level provided we have enogh evidence to FAIL to reject the null hypothesis and we can't conclude that the true means are different at 5% of significance

6 0

2 years ago

A roller coaster makes an angle of 55 degrees with the ground. The horizontal distance fro the crest of the hill to the bottom o

Svetradugi [14.3K]

QmvkwmPNPNEFIBGIONRONWI

3 0

2 years ago

Sven has 11 more than twice as many customers as when he started selling newspapers. He now has 73 customers. How many did he ha

Amiraneli [1.4K]

73-11 = 62

62/2= 31

He started with 31 costumers

3 0

2 years ago

Read 2 more answers

8 5x=-2 whats the value of the variable?

wlad13 [49]

In order to get the value of x you have to set x by itself subtract from both sides because the only way to get rid of a positve its with a negative now you have 5x=6, now divide 5 from both sides because the only way to get rid of a multiplication is with a division, this will give you the final answer of x=6/5

Hope this helps

8 0

2 years ago

EXPLAIN YOUR ANSWER

Bad White [126]

Solve the equation by substitution method.
To get b-2-3b=4. Then you substitute b into simplest to get, b=-3. Repeat the same process with a to get, a=-5. So your answer would be (-5, -3)

7 0

2 years ago