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ValentinkaMS [17]
3 years ago
14

Marcus said the product of 78 × 134 is 94. How can you tell that his answer is wrong?

Mathematics
1 answer:
QveST [7]3 years ago
7 0
You can use estimation.

80×130=10,400

Clearly 10,400 and 94 are way off.
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4. Is rap music more popular among young Indians than among young Asians? A sample survey compared 634 randomly chosen Indians a
bulgar [2K]

Answer:

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap music every day.

Step-by-step explanation:

Given  a sample survey compared 634 randomly chosen Indians aged 15 to 25 with 567 randomly selected Asians in the same age group.

p_{1} = \frac{368}{634} =0.580

It found that 368 of the Indians and 130 Asians listened to rap music every day.

p_{2} = \frac{130}{567} =0.229

Null hypothesis H0: there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

p_{1} = p_{2}

Alternative hypothesis:- p_{1} \neq  p_{2}

Level of significance α = 0.05

The test of statistic

z = \frac{p_{1} -  p_{2}}{\sqrt{pq(\frac{1}{n_{1} }+\frac{1}{n_{2} })  } } }

where p = \frac{n_{1}p_{1} + n_{1}p_{2}}{n_{1}+n_{2}} = \frac{634(0.580)+567(0.229)}{634+567}

       p = 0.414

and q = 1-p = 1- 0.414 =0.586

Z = \frac{0.580-0.229}{\sqrt{0.414(0.586)(\frac{1}{634} +\frac{1}{567} } } }

on calculation , we get

z = 0.300 ><1.96 at 95 % level of significance

H0 is accepted

there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

3 0
3 years ago
Calculate the volume<br><br> Please show the steps....
GaryK [48]

Answer:

4,800

Step-by-step explanation: 6 times 5 times 8 times 20=4800 :D

5 0
3 years ago
Read 2 more answers
A jazz band wants to sell $24,000 worth of tickets. If each ticket costs $80, how many tickets will the band have to sell to mee
Dafna11 [192]

Answer:

300

Step-by-step explanation:

24000/80

7 0
4 years ago
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Convert 3 quarts to pints
ss7ja [257]

Answer:

6 pints

Step-by-step explanation:

There are two pints in a quart, so there are 2 times 3 pints in three quarts.

Hope this helps!

4 0
3 years ago
Read 2 more answers
A total of 585 tickets were sold for the school play. They were either adult tickets or student tickets. There were 65 fewer stu
natulia [17]

Answer:

325

Step-by-step explanation:

Total Tickets = 585

Let the adult tickets be = x

If 65 fewer student tickets were sold than adult tickets then Student tickets = x-65

Student Tickets + Adult Tickets = 585

x + (x-65) = 585

x + x - 65 = 585

2x - 65 = 585

2x = 585 + 65

2x = 650

2x/2 = 650/2

x = 325

Answered by Gauthmath

3 0
3 years ago
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