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Find the minimum sample size you should use to assure that your estimate of will be within the required margin of error around the population p.
Margin of error: 0.008; confidence level: 99%; from a prior study, is estimated by 0.164
If a group of 81 children is selected at random, what is the probability that the average time these children watch television is more than 3.5 hours a day?
Before 1918, in a random sample of 11 wolves spotted in the region, what is the probability that 8 or more were male?
Transmission is normally distributed with an average of 78,000 miles and a standard deviation of 15,000 miles. What percentage of these transmissions will last at least 90,000 miles?
The students were asked to evaluate the effectiveness of the format on an 11-point scale (1 = poor, 11 = excellent). What are the degrees of freedom associated with the test statistic?
From this group of 2000 accounts what is the probability that an account has a balance of $500 or more, given that it is 3 or more years old?
Statistically significant differences (α ≥ 0.05) between the benefits of behavioral therapy and psychoanalysis when treating an eating disorder were found.
Below are one hundred pseudorandom numbers from a uniform pdf. Set up and test the appropriate goodness-of-fit hypothesis. Let α = 0.05.
Consider a random sample of six families who are asked if their children have an influence on their vacation destination.
The value of "Z" chosen for constructing (calculating) the confidence interval estimate is determined by
health studies indicate that 5 percent of the population of umen has a disease that is peculiar to that country. there
Can people really identify their favorite brand of cola? Volunteer tasted coca-cola classic, pepsi, Diet coke, and Diet pepsi, with the results shown below.
A large internet retailer is studying the lead time (elapsed time between the time when the order is placed and the time it is filed). The table below gives the lead times (in days) for a random sample of recent orders.
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