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Nikolay [14]
3 years ago
9

If anyone knows answer with steps that will be greatly appreciated :)

Mathematics
1 answer:
OLga [1]3 years ago
6 0

Answer:

The area formula is= 1/2(a+b)×height

1/2×20×6=60metres squared

Step-by-step explanation:

kindly correct me if am wrong

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Find the critical value of x2 based on the given information H1 >3.5 n=14 a=0.05
egoroff_w [7]

Answer:

The degrees of freedom are given by:

df = n-1=14-1=13

The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

Step-by-step explanation:

We have the followign system of hypothesis:

Null hypothesis: \sigma^2 \leq 3.5

Alternative hypothesis: \sigma^2 >3.5

The degrees of freedom are given by:

df = n-1=14-1=13

The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

4 0
3 years ago
HELP ASAP PLEASE :))))))
IrinaK [193]

Answer:

7

Step-by-step explanation:

because I am smart and cause im smart

5 0
3 years ago
Read 2 more answers
HELP ME ASAP.
slavikrds [6]

Answer:

The first number lets say is x

the second is y so

y=1/2x+8

x+1/2x+8=58

1 1/2x=50

x= 33 1/3

Hope This Helps!!!

6 0
3 years ago
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Can someone turn 1938 into a scientific notation for me? 10 POINTS
photoshop1234 [79]

Answer:

1.938 x 10^3

Step-by-step explanation:

1938 move decimal 3 times to left and times by 10 to 3rd

3 0
3 years ago
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Yesterday, Marissa walked 1 1/2 miles from school to the ice
BigorU [14]

Answer:

2 1/6 miles

Step-by-step explanation:

1 1/2 miles + 2/3 miles = 2 1/6 miles

8 0
2 years ago
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