Joseph uses 30 grams of sugar and 24 grams of butter.
2 answers:
Answer:
(a ) 1.25 times.
(b) 0.8 times.
Step-by-step explanation:
We have been given that Joseph uses 30 grams of sugar and 24 grams of butter.
(a) To find the amount of sugar is how many times the amount of butter, we need to find 30 is what part of 24.
Therefore, the amount of sugar is 1.25 times the amount of butter.
(b) To find the amount of butter is how many times the amount of sugar, we need to find 24 is what part of 30.
Therefore, the amount of butter is 0.8 times the amount of sugar.
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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: