All categories

2 years ago

Fill in the blanks below.

Mathematics

2 answers:

mihalych1998 [28]2 years ago

5 0

A-4
B+19 yass yass yass

ElenaW [278]2 years ago

3 0

Answer:

A. -4

B. +19

Step-by-step explanation:

You might be interested in

A bag of marbles has 10 red marbles, 4 green marbles, and 6 blue marbles. A marble is randomly drawn from the bag before another

Anna007 [38]

Answer:

2/19

Step-by-step explanation:

i just took the test and no one helped me i got is wrong but when you go back to review it it tells you the answer hope im not too late

6 0

2 years ago

Which best explains why state governments are better able to focus on the needs of their citizens than the federal

sesenic [268]

Answer:

The state governments are able to focus entirely on the citizens that live there. The federal government has to deal with wide spread, national issues, and would not provide the care and attention that the smaller state governments can.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A 98% confidence interval is found to be (50, 60). What is the margin of error?

miss Akunina [59]

Answer:

D. 5

Step-by-step explanation:

Mean: (50+60)/2

110/2

Margin of error:

60 - 55

3 0

3 years ago

An investigator compares the durability of two different compounds used in the manufacture of a certain automobile brake lining.

Tanya [424]

Answer:

98% Confidencce Interval is ( 3030.6, 7467.4 )

Step-by-step explanation:

Given that:

Sample size $n_1 =$ 71

Sample size $n_2 =$ 31

Sample mean $\overline x_1 =$ 41628

Sample mean $x_2 =$ 36,379

Population standard deviation $\sigma_1$ = 4934

Population standard deviation $\sigma_2 =$ 4180

At 98% confidence interval level, the level of significcance = 1 - 0.98 = 0.02

Critical value at $z_{0.02/2} = 2.33$

The Margin of Error = $z \times \sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma^2_2}{n_2} }$

= $2.33 \times \sqrt{\dfrac{4934^2}{71}+\dfrac{4180^2}{31} }$

= $2.33 \times \sqrt{\dfrac{24344356}{71}+\dfrac{17472400}{31} }$

= $2.33 \times \sqrt{906504.06 }$

= 2218.40

The Lower limit = $( \overline x_1 - \overline x_2) - (Margin \ of \ error)$

= ( 41628 - 36379 ) - ( 2218.40)

= 5249 - 2218.40

= 3030.6

The upper limit = $( \overline x_1 - \overline x_2) + (Margin \ of \ error)$

= ( 41628 - 36379 ) + ( 2218.40)

= 5249 + 2218.40

= 7467.4

∴ 98% Confidencce Interval is ( 3030.6, 7467.4 )

5 0

3 years ago

Help plz<br> I need help on this

son4ous [18]

Answer:

Step-by-step explanation:

3 0

3 years ago