that the mean weight of King Penquins found in an Anaretie colony last year was
ID: 3310996 • Letter: T
Question
that the mean weight of King Penquins found in an Anaretie colony last year was 16.4 klograms and the standard deviation was 2 kilograms, You want to test the null hypothesis that the mean penguin weight this year does not differ from last year Assume that the standard deviation has not changed You are planning to measure a random sample of 100 penguins. At 1% significance level, find the critical values for the test. 0 14.755 and 16.045 O b. 14.910 and 15.890 O c. 14.990 and 15.810 O d. 14.884 and 15.916 0 e. 15.008 and 15.792 QUESTION 2 1 points Save Answer The Big Bang Theory is one of the most popular TV shows. You believe that 50% of al Arneroans who re 11 to 49 years old have watched to Big Bang Thursday Then, what is the p-value of your hypothesis? Theory last Thuriday night. You found a suvey result that, of 400 respondents whio are botween 18 and 49 years old, 227 watched the Blig Bang Theory last a0.10960 b.0.03572 c 0.00094 d 001640 e 0.0718Explanation / Answer
Confidence intervel =x+/- Margin of error
= =15.4 +/- Margin of error
Margin of error, E=z*s/SQRT(n) ,the value of z at alpha =0.01 is 2.58( two tailed)
Margin of error, E=2.58*2/SQRT(100)
Margin of error, E = 0.516
99% Confident the population mean is within the range:
14.884< mean <15.916
option D
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