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spiritcampbell56
11.01.2020 •
Mathematics
You are told that in a sample of size 225 the mean is 48.5 and the standard deviation is 1.8. the study is reported with 90% confidence level. explain how to determine if 48.8 is within the confidence interval.
cl(%); 90, 95, 99
z*score: 1.645, 1.96, 2.58
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Ответ:
Ответ:
The z*-score for a 90% confidence level is 1.645.The margin of error is 0.20.
The confidence interval is 48.3 to 48.7.
48.8 is not within the confidence interval.
Ответ:
He will swim 51 laps on the 6th day
Step-by-step explanation: