Entries by Grace Wahito

In a survey of style=”color:rgb(0,0,0);”>6000 women 3431 say they change their nail polish

In a survey of  style=”color:rgb(0,0,0);”>6000 women 3431 say they change their nail polish once a week3431 say they change their nail polish once a week.99% confidence interval for the population proportion of women who change their nail polish once a week.   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon […]

 

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In a survey of style=”color:rgb(0,0,0);”>3220

In a survey of  style=”color:rgb(0,0,0);”>3220 1496 say they have started paying bills online in the last year.Construct a​ 99% confidence interval for the population proportion. Interpret the results.   Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code “Newclient”

 

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A doctor wants to estimate the HDL

A doctor wants to estimate the HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the HDL cholesterol within 4 4 points with 99 % 99% confidence assuming sigma equals 19.5 question mark  σ=19.5? Suppose the doctor would be content with 95 % 95% confidence. How does the decrease in confidence […]

 

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True or False? If the following statement is not true modify it so that it is true:

1)    True or False? If the following statement is not true modify it so that it is true: When OR is used to describe the occurrence of two events, P(A OR B), the corresponding probability can be calculated by adding the probability of each event occurring independently of the other P(A) + P(B) = P(A OR B).   […]

 

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