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Sloan [31]
3 years ago
7

Who ever can answer questions 8,9, and 10 will get 34 pts

Mathematics
1 answer:
k0ka [10]3 years ago
8 0

Answer:

I am looking for this anwer to

Step-by-step explanation:

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A randomly selected sample of n =51 men in Brazil had an average lifespan of 59 years. The standard deviation was 10 years. Calc
Aloiza [94]

Answer:

59-2.40\frac{10}{\sqrt{51}}=55.639    

59+ 2.40\frac{10}{\sqrt{51}}=62.361    

The 98% confidence interval would be given by (55.639;62.361)    

Step-by-step explanation:

Information given

\bar X= 59 represent the sample mean

s= 10 represent the sample deviation

n= 51 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom are given by:

df=n-1=51-1=50

The Confidence is 0.98 or 98%, the significance would be \alpha=0.02 and \alpha/2 =0.01,and the critical value would be t_{\alpha/2}=2.40

And replacing we got:

59-2.40\frac{10}{\sqrt{51}}=55.639    

59+ 2.40\frac{10}{\sqrt{51}}=62.361    

The 98% confidence interval would be given by (55.639;62.361)    

3 0
3 years ago
Lamar and his family sell strawberry jelly and blueberry jelly at the farmers' market every Saturday. So far this year, they hav
spayn [35]

Answer:

524

Step-by-step explanation:

973-449=524

4 0
2 years ago
Read 2 more answers
All the edges of the object in the diagram are equal in length. The object is cut by a vertical plane containing A and B and bis
AVprozaik [17]

The shape of the cross-section resulting from the cut is Rhombus.

Given that,

All the edges of the object in the diagram are equal in length.

The object is cut by a vertical plane containing A and B and bisecting two of the horizontal edges.

We have to determine,

What is the shape of the cross-section resulting from the cut?

According to the question,

All the edges of the object in the diagram are equal in length.

The length of all edges is equal in the rhombus.

The object is cut by a vertical plane containing A and B and bisecting two of the horizontal edges.

When the midpoints of all the four sides of a rhombus are joined with each other, you will obtain a rectangle whose length and width will measure half of the value of the prime diagonal.

Moreover, the area of the rectangle formed in this case will be half of the rhombus.

Hence, The shape of the cross-section resulting from the cut is Rhombus.

For more details refer to the link given below.

brainly.com/question/18660021

8 0
2 years ago
A store sells 1 gallon of lemonade for 7 dollars and 1 quart of lemonade for 2 dollars. Horace has 11 dollars to buy 6 quarts of
valina [46]
To find how much 6 quarts would cost we would need to do 6q(x)$2 to find the total. 6q(x)$2=$12 [Q as in quarts] He would need one more dollar to be able to purchase 6 quarts, but he only has enough money for 5.

6 0
3 years ago
A number b less the quotent of a number k and 5
ololo11 [35]
This can be translated into an algebraic expression as

K/5 - b.
5 0
3 years ago
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