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Out of 200 people sampled, 138 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids.
Give your answers as decimals, to three places
____________ < p < ___________
Antidepressant is normally distributed with a mean of 6 lbs and a standard deviation of 3 lbs. What is the probability of weight gain? What is the probability of gaining between 0 and 12 lbs?
State the appropriate hypotheses. Obtain a test statistic and p-value. Interpret the results at ? = .01. Is normality assured? Is the difference large enough to be important?
If the 12 a central confidence interval on m does not contain the value of µ in the null hypothesis, then a two-tailed test would lead to rejection
What is the most significant aspect of the central limit theorem?- Under what conditions is the central limit theorem most useful in sampling to estimate the population mean?
If you want to provide a warranty so that only 2% of CD player will be replaced before the warranty expires, what is the time length of the warranty? c) What is p67?
"A job in an insurance office involves telephone conversations with policyholders. The office man- ager estimates that about half of the employee's time is spent on the telephone.
Describe the leadership behaviors Ron used and their influence on the attitudes and behavior of the team members.
Two essential features of all statistically designed experiments are (a) compare several treatments; use the double-blind method.
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
The waiting room for jury selection has 40 women and 30 men to choose from. A jury of 12 is selected from these 70 people, what is the probability that exactly 5 of the jury members will be women?
X is a Bernoulli random variable with unknown success probability. Using 100 independent samples of X find a confidence interval estimate of p with significance level 0.99. If M100(X) = 0.06, what is our interval estimate?
Be sure to include information about how you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals.
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