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sairaanwar67
21.01.2020 •
Mathematics
Apreliminary study of the fall lobster catch showed that for 35 lobsters selected at random the mean weight was 2.9 pounds with standard deviation of .6 pounds find a 90% confidence interval for the population mean of the fall lobster.
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Ответ:
= ( 2.73, 3.07)
Therefore at 90% confidence interval (a,b) = ( 2.73, 3.07)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean gain x = 2.9
Standard deviation r = 0.6
Number of samples n = 35
Confidence interval = 90%
z(at 95% confidence) = 1.645
Substituting the values we have;
2.9+/-1.645(0.6/√35)
2.9+/-1.645(0.1014)
2.9+/-0.167
2.8+/-0.17
= ( 2.73, 3.07)
Therefore at 90% confidence interval (a,b) = ( 2.73, 3.07)
Ответ:
lol
Step-by-step explanation: