How all your work and draw the picture whenever needed, Make sure to write answe

Question

How all your work and draw the picture whenever needed, Make sure to write answer in complete your re sentence. Please also make sure you write the name of the technology you use including steps. At a large university, students have an average credit card debt of $2500, with a standard deviation of $1400. 49 students are randomly selected, would it be unusual to find their mean credit card debt is $2950? A recent poll of 188 residents in a large town found that 76% have health insurance. Find the margin of error for this poll if we want 95% confidence in our estimate of the percent of all residents that have health insurance. How many women must be randomly selected to estimate the mean weight women age group? We want 90% confidence that the sample mean is within 3.7 lb of the population and the population standard deviation is known to be28 lb.

Explanation / Answer

2. Margin of error = Z*SE

The value of SE = sqrt(p*p'/n), where p = .76 and n = 188

So, Margin of error = 1.96*sqrt(.76*.24/188) = .0611

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