#Z score for 98 confidence interval trial#

Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 0 minutes.į. Yes, the confidence interval indicates that the treatment is effective because the interval does not containĮ. Yes, the confidence interval indicates that the treatment is effective because the interval contains 0 minutes.ĭ. No, the confidence interval does not indicate whether the treatment is effective.Ĭ. Yes, the confidence interval indicates that the treatment is not effective because the interval contains 0 minutes.ī. (Round to two decimal places as needed.)ĭoes the result indicate whether the treatment is effective?Ī. Does the result indicate whether the treatment is effective? Assume that the 23 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. After treatment with the drug, 23 subjects had a mean wake time of 90.4 min and a standard deviation of 40.7 min.

#Z score for 98 confidence interval trial#

A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. This result is exactly the same as the actual weight of the bear. This result is not very close to the actual weight of the bear. This result is close to the actual weight of the bear. This result is very close to the actual weight of the bear. Is the result close to the actual weight of (Round to one decimal place as needed.) The best predicted weight for a bear with a chest size of 51 inches is _ pounds. What is the best predicted weight of a bear with a chest size of 51 inches? (Round to one decimal place as needed.) pounds? Use a significance level of 0.05

Then find the best predicted weight of a bear with a chest size of Find the regression equation, letting chest size be the independent (x) variable. The data show the chest size and weight of several bears.