Wow I'm done u need to guess that's my advice or ask a teacher ur screwed
The mean of the confidence interval is (0.3775 + 0.6225) / 2 = 0.5. Therefore, the standard deviation of the proportion would have been sqrt[0.5*(1 - 0.5) / n], where n is the sample size. This expression simplifies to sqrt(0.25/n).
A 95% CI has a corresponding z = 1.96, so since the distance from 0.5 to 0.3775 (or 0.6225 to 0.5) is equal to 0.1225. Therefore, if we divide 0.1225 / 1.96 = 0.0625, we get the value of the SD, and this should be equal to sqrt(0.25/n).
0.0625 = sqrt(0.25/n)
n = 64
This means that the proportion was 0.5 and the sample size was 64.
If Naya is filling up the gas tank in her motorcycle she puts 4.145 gallons of gas in the tank if the gas cost $2.57 per gallon then she spend $10.65
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given,
The cost of one gallon of gas =$2.57
The quantity of gas she puts in the tank = 4.145 gallons
Apply unitary method
Then, the cost of 4.145 gallons of gas = Cost of one gallon of the gas × Quantity of gas
The cost of 4.145 gallons of gas= 2.57×4.145= $10.65
Hence, If Naya is filling up the gas tank in her motorcycle she puts 4.145 gallons of gas in the tank if the gas cost $2.57 per gallon then she spend $10.65
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This is an example of an arithmetic sequence.
On level one: a 1 = 13.On level twelve: a 12 = 123.The sum of all 12 levels:S n = n/2 * ( a 1 + a n )S 12 = 12/2 * ( a 1 + a 12 )S 12 = 6 * ( 13 + 123 )S 12 = 6 * 136S 12 = 816Answer: I will have 816 gems matched.