Returning to a previously described scenario: Suppose that a scientist is interested in determining if the proportion of females who prefer Diet Coke to regular Coke is different from the proportion of males who prefer Diet Coke to regular Coke. They randomly sample 219 people and ask them if they prefer Diet Coke to regular Coke, and also record if they are a male or a female. Their study results in the following table: males females total sample size 112 107 219 number of successes 56 73 129 sample proportion 0.50 0.68 0.59 Fill in the blanks with the correct values for the z-statistic for the hypothesis test. (Note: the first blank in the numerator is the observed value and the second number in the numerator is the hypothesized value.) Report the first value in the numerator to two decimal places. Round the value in the denominator to four decimal places. z = ( ______ - ______ )________ /________
Returning to a previously described scenario: Suppose that a scientist is interested in determining if the proportion of females who prefer Diet Coke to regular Coke is different from the proportion of males who prefer Diet Coke to regular Coke. They randomly sample 219 people and ask them if they prefer Diet Coke to regular Coke, and also record if they are a male or a female. Their study results in the following table:
|
|
males |
females |
total |
|
|
112 |
107 |
219 |
|
number of successes |
56 |
73 |
129 |
|
sample proportion |
0.50 |
0.68 |
0.59 |
Fill in the blanks with the correct values for the z-statistic for the hypothesis test. (Note: the first blank in the numerator is the observed value and the second number in the numerator is the hypothesized value.) Report the first value in the numerator to two decimal places. Round the value in the denominator to four decimal places.
z = ( ______ - ______ )________ /________
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