A prize fund is divided between Sean Barry and Cian in the ratio of 4:3:2 if Cian got 1224 what's the total fund?
1 answer:
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just like the previous one, we sum the sides to get the perimeter.
Answer:
a) The formula is given by mean the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.
b)
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
If the distribution for X is normal or if the sample size is large enough we know that the distribution for the sample mean is given by:
Part a
The formula is given by mean the margin of error. Where the margin of error is the product between the critical value from the normal standard distribution at the confidence level selected and the standard deviation for the sample mean.
Part b
The confidence interval for the mean is given by the following formula:
Answer:
7.3%
Step-by-step explanation:
Given:
<em>Formula for Rate of interest </em>:
Where is the rate of interest.
dollars is the loan and
years is the time for which interest is to be paid
To find:
Solution:
Putting the given values in the formula:
Multiply the above value with 100 to find the percentage.
i.e.
Therefore, the answer is <em>7.3%</em>