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AlexFokin [52]
3 years ago
5

Matt has a rectangular garden that is 10 ft wide and 24 Ft long . He wants to build a fence from one corner to the opposite corn

er . How many feet of fence does Matt need ???
Mathematics
2 answers:
ValentinkaMS [17]3 years ago
7 0

Answer:

Step-by-step explanation:-

iogann1982 [59]3 years ago
5 0
He needs 26 feet of fence.

The diagonal of the rectangle forms the hypotenuse of a right triangle.  The two legs would be the width of the rectangle, 10, and the length, 24:

10²+24² = c²
100+576 = c²
676 = c²
c = √676 = 26
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1) If the alpha level is changed from α = .05 to α = .01, what happens to boundaries for the critical region?
Alexxandr [17]

Answer:

1) a. Move farther into the tails

2) a. Decreases

Step-by-step explanation:

Hello!

1)

Let's say for example that you are making a confidence interval for the mean, using the Z-distribution:

X[bar] ± Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Leaving all other terms constant, this are the Z-values for three different confidence levels:

90% Z_{0.95}= 1.648

95% Z_{0.975}= 1.965

99% Z_{0.995}= 2.586

Semiamplitude of the interval is

d= Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Then if you increase the confidence level, the value of Z increases and so does the semiamplitude and amplitude of the interval:

↑d= ↑Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

They have a direct relationship.

So if you change α: 0.05 to α: 0.01, then the confidence level 1-α increases from 0.95 to 0.99, and the boundaries move farther into the tails.

2)

The significance level of a hypothesis test is the probability of committing a Type I error.

If you decrease the level from 5% to 1%, then logically, the probability decreases.

I hope this helps!

5 0
3 years ago
Nine hundred light bulbs are packaged and shipped to a retail store. Thirteen percent of the light bulbs arrive broken. Which eq
Over [174]

Answer:

3

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Anne-marienhas saved 9 dollars for a new coat that is 1/6 as much money as she needs how much does the coat cost
Tatiana [17]

Answer:

Cost of the coat = $54

Step-by-step explanation:

Given:

She saved = $ 9

To Find:

Cost of the coat = ?

Solution:

Let the price of coat be x

She saved $9

and according to given condition it is 1/6 of the total money she needs for buying coat

by this we have

\frac{1}{6}*x = 9

Multiplying both sides by 6

\frac{1}{6}*x*6 = 9*6

it becomes

x = 9*6

x = $54

As x is the amount she needs

so

Cost of the coat = $54


7 0
3 years ago
This is the last question i got a 100 so far can we get a full 100
yKpoI14uk [10]

Answer:

b

Step-by-step explanation:

8 0
2 years ago
The amount 6.40 is 4% of what price
lys-0071 [83]

Answer:

160

Step-by-step explanation:

6.4 = 0.04x

6.4 / .04 = 160

4 0
3 years ago
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