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Researchers conducted a study of smartphone use among adults. A cell phone company claimed that iPhone smartphones are more popular with whites (non-Hispanic) than with
Researchers conducted a study of smartphone use among adults. A cell phone company claimed that iPhone smartphones are more popular with whites (non-Hispanic) than with African Americans. The results of the survey indicate that of the 232 African American cell phone owners randomly sampled, 5% have an iPhone. Of the 1,343 white cell phone owners randomly sampled, 10% own an iPhone. Find a 95% confidence interval for the difference in proportions between white and African American smartphone users. FIND YOUR POINT ESTIMATOR p1 p2 p1- p2 CHOOSE YOUR Z VALUE Z = CALCULATE SIGMA a b (p1 (1-p1))/n1 (p2(1-p2))/n2 sqrt(a+b) CALCULATE MARGIN OF ERROR ME = CALCULATE CONFIDIENCE INTERVAL Point Estimator Marigin of Error Interval Algebraic
| Researchers conducted a study of smartphone use among adults. A cell phone company claimed that iPhone smartphones are more popular with whites (non-Hispanic) than with African Americans. The results of the survey indicate that of the 232 African American cell phone owners randomly sampled, 5% have an iPhone. Of the 1,343 white cell phone owners randomly sampled, 10% own an iPhone. Find a 95% confidence interval for the difference in proportions between white and African American smartphone users. | ||||||||
| FIND YOUR POINT ESTIMATOR | ||||||||
| p1 | p2 | p1- p2 | ||||||
| CHOOSE YOUR Z VALUE | ||||||||
| Z = | ||||||||
| CALCULATE SIGMA | a | b | ||||||
| (p1 (1-p1))/n1 | (p2(1-p2))/n2 | sqrt(a+b) | ||||||
| CALCULATE MARGIN OF ERROR | ||||||||
| ME = | ||||||||
| CALCULATE CONFIDIENCE INTERVAL | ||||||||
| Point Estimator Marigin of Error | ||||||||
| Interval | ||||||||
| Algebraic | ||||||||
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Paradoxes In Mathematics
Authors: Stanley J Farlow
1st Edition
0486791734, 9780486791739
