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Step-by-step explanation:
in 2nd exp. this is because by using the formula of a2-b2
Answer: a. 0.542
b. 0.051
c.
Step-by-step explanation:
Let p be the population proportion of parents spend too little time with their children because of work commitments
As per given , we have
n= 369
Since the sample proportion is the best estimate for the population proportion.
So , the point estimate of the proportion of the population of working parents who feel they spend too little time with their children because of work commitments = 0.542
z-value for 95% confidence interval :
Margin of error :
The margin of error = 0.051
Confidence interval :
95% confidence interval estimate of the population proportion of working parents who feel they spend too little time with their children because of work commitments :
Answer:
Step-by-step explanation:
Given
-
← factor denominator
= -
We require the fractions to have a common denominator.
Multiply numerator/denominator of first fraction by x
= -
Subtract terms on numerator leaving the common denominator
=
=