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Anastasy [175]
2 years ago
7

Answer questions 5-9 please

Mathematics
1 answer:
WITCHER [35]2 years ago
8 0

Answer: 5. B

6. eh

7. ac

8. vlm

9. frs

Step-by-step explanation:

The squiggle inbetween the groups of letters means congruent, or equal to. So if triangle abc is the same as triangle meh, then the length between a and b of the first triangle must be equivalent to the length between m and e of the second triangle (LETTER ORDER IS IMPORTANT)

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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
3 years ago
75% of what number is 42?
Anna35 [415]
75            42
-----         -----
100           x

75 x= 4200
---       ------
75       75

x = 56



6 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

The product of 5 and n puts them in the same category and product means times and your going to minus t divided by 7

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Joey collects baseball cards. He already has 245 and for his birthday, each of his 12 friends bought him 25 more. How many baseb
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Answer:545 baseball cards

Step-by-step explanation:hope this helps!

6 0
2 years ago
Which expression can be used to detemine the reference for the angle, x, measuring 150 degree​
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Do you have an A B C it helps
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