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My name is Ann [436]
3 years ago
11

6. Calculate the 90% confidence interval for the difference of the average number of fireflies caught in a 15-minute interval be

fore 9pm and the average number of fireflies caught in a 15-minutes interval after 9pm. Show your work!
Mathematics
1 answer:
Nataly_w [17]3 years ago
3 0

Answer:

-1.193 <  U_{d}  > 4.443

Step-by-step explanation:

1.625 -1.895 *4.206712/sqr 8

1.625 - \frac{1.895 * 4.206712}{\sqrt{8} }  < U_{d}  >  1.625 +  \frac{1.895 * 4.206712}{\sqrt{8} }  

-1.193 <  U{d}  > 4.443

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1.5d + 3.25 = 1 + 2.25d ---What are the steps to find x?
yuradex [85]
Do u mean d?

1.5d +3.25 = 1 +2.25d  
3.25 = 1 + .75d              -1.5d on both sides
2.25 = .75d                      subtraction 1 on both sides
3 = d                                  divide both sides by .75
 
3 0
3 years ago
The MTC Theater holds 250 people, and last night's performance sold out! Children's tickets were $2.50 per ticket, while adults
olasank [31]

60 children tickets and 190 adult tickets were sold.

<u>Step-by-step explanation:</u>

Let the no. of adult tickets sold be 'a'

Let the no. of children tickets sold be 'c'

Total tickets sold = 250

Cost of 1 children ticket = $2.5

Cost of 1 adult ticket = $4

Total money collected= $910

Given that,

a + c = 250

a = 250 - c

4a + 2.5c = 910

Substitute a value

4(250 - c) + 2.5c = 910

1000 - 4c + 2.5c = 910

1000 - 1.5c = 910

-1. 5c = -90

1.5c = 90

c = 90/1.5

c = 60

a + c = 250

a + 60 = 250

a = 190

60 children tickets and 190 adult tickets were sold.

6 0
3 years ago
adrian makes 12 bracelets on monday .he makes 8 more bracelets from tuesday to thursday .how many bracelets does aidan make on f
Solnce55 [7]
Billion million Gillian Idk delete this comment I don't deserve it here not a proper answer :(
3 0
3 years ago
Read 2 more answers
Solve for n.<br> n+ 1 = 4(n-8)<br> n = 1<br> n = 8<br> n = 11<br> C n = 16<br><br> Help? ;-;
kari74 [83]

Answer:

MMMMMMMMMMMMMMMM NO :)

8 0
2 years ago
A cyclist rides her bike at a rate of 2 meters per second. What is this rate in kilometers per hour? How many kilometers will th
Oksanka [162]

The speed v is 12 m/s.

 

You need to convert the seconds to hours  and meters to kilometers:

 

3600s = 1 hr

 

If you divide 3600 on both sides you will get

 

1 s = (1/3600) hr

 

 

1000m = 1 km

 

If you divide 1000 on both sides you will also get

 

1 m = (1/1000) km

 

 

v = [(12/1000) km] / [(1/3600) hr]

 

v = [(12*3600)/1000] km/hr

 

v = 216/5  km/hr

 

 

The distance in 4 hours is

 

d = [(216/5) km/hr] * 4hr

 

d = 864.50 km

This is why your answer should be 12 m/s

Hope this helps!! - Queenb369

8 0
2 years ago
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