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Kipish [7]
3 years ago
13

I NEED A EXPLAINATION

Mathematics
1 answer:
astraxan [27]3 years ago
4 0

2.54,2,-1.79,-4

Step-by-step explanation:

gretest is 2.54 because 2.54 is nearer to 3so it is greatest. then 2 is smaller than 2.54 and then -1.74 and -4 because the number which is greater in negative is the most smallest number.

for , another example -1 is greater than-100.

please follow me

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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
Right now, Simran's father is three times as old as Simran. Five years ago, he was four times as
Illusion [34]
Hello,

Let's f the age of the father
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f=3*s
f-5=4*(s-5)
==>3s-5=4s-20
==>s=15
f=3*15=45


3 0
3 years ago
Read 2 more answers
(See diagram) The gradient of the line joining the origin to the point A is 1/2. The distance between A and the origin is sqrt 2
GuDViN [60]

Answer:

(42, 21) or (–42, –21)

Step-by-step explanation:

let A(x, y), A on line 2y = x

distance

x² + y² = 2205

(2y)² + y² = 2205

y² = 441

y = ±21

x = ±42

3 0
3 years ago
Plz answer the one in the left middle it goes along with the one right next to it.btw the top number in the pyramid says 72☺
9966 [12]
I hope this helps you

4 0
3 years ago
Sally can pick 10 strawberries in 2 minutes. How many strawberries can she pick in 9 minutes
Luda [366]

Answer:

45

Step-by-step explanation:

Sally can pick 10 strawberries in 2 minutes.

Number of strawberries Sally can pick in a minute =10/2=5

Number of strawberries she can pick in 9 mins=5*9=45 strawberries.

PLEASE APPRECIATE THE EFFORT AND MARK AS BRAINILIEST.

3 0
3 years ago
Read 2 more answers
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