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A 95% confidence interval for μ means that:
a) 95% of confidence intervals generated will include the sample mean X.
b) 5% of the confidence intervals generated will include the true mean μ
c) 5% of the possible population means μ will be included in the interval
d) 95% of the possible population mean μ will be included in the interval
f) 95% of the confidence interval generated ill include the true mean μ
g) none of the above.
What is the smallest number of consumers that Timex can survey to guarantee a margin of error of .05 or less at a 99% confidence level and calculate the intervals correctly
Make use of normal probability distribution features of EXCEL to help determine the probability.
At a = 0.05, can you reject claim that at least 52% of adults are more probable to purchase a product when there are free samples?
Find out the probability
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p- value.
An experiment was conducted to determine the effects of three different pesticides (P1,P2,P3) on the yield of three different varieties of citrus tree (V1,V2,V3).
The Wilcoxon rank sum of the ranks for group and The value of the Wilcoxon signed rank statistic
A company is interested in estimating μ, mean number of days of sick leave taken by its employees. The firm's statistician randomly selects 100 personnel files and notes the number of sick days taken by each employee.
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Mention your decision regarding the null hypothesis. If H 0 rejected can we conclude that treatment 2 and treatment 3 differ? Use 95 percent level of confidence.
Use this information to determine the empirical probability that the next bird to visit the feeding station will be a dove.
Explain a Type I error for this situation. Explain a Type II error for this situation.
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