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Probability and Statistics Could you please solve the following questions with specifying the answers A. When finding confidence...

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Statistics

Probability and Statistics

Could you please solve the following questions withspecifying the answers

A. When finding confidence intervals, theinterval is smaller if

a.sample size and standard deviation are bigger

b.sample size and standard deviation are smaller

c.sample size is bigger, but the standard deviation issmaller

d.sample size is smaller, but standard deviation isbigger.    

B. If the birth weights of the babies bornannually in a hospital is Normal with a mean of 5 pounds 10 ouncesand a standard deviation of 5 ounces, what percentage of babies areborn weighing less than 5 pounds? (No table needed.)

a. 13.5%       b.2.5%       c.16%        d. .3%

C. What percent of the babies born weighbetween 5 pounds and 5 pound 5 ounces? (Again no table.)

a. 13.5%       b.47.5%       c.16%        d. 34%

D. Of the 40 babies born during the first weeksof next month, how many are likely to be under five pounds?

a. 4      b.2      c.6     d.1     

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