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From a random sample of 41 teens, it is found that on average they spend 31.8 hours each week online with a population standard deviation of 5.91 hours. What is the 90% confidence interval for the amount of time they spend online each week?
What is the standard deviation for the weight of a package? Round your answers to four decimal places, if necessary.
The same chance of being selected as does any other group. What is the probability that at least one of the shifts will be unrepresented in the sample of workers?
Given the digits zero through nine, a computer program is supposed to generate even and odd numbers randomly.
Analysis of variance- One way classification - Are there differences among these 3 drugs with respect to how long they are retained in the body?
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this the right interpretation for the margin of error?
Describe the pros and cons of Mary using a repeated measures design for this study. What would you probably choose to do? Support your responses.
A trucking company has been requested to quote a realistic turnaround time for a contract to handle the distribution of products to supermarkets.
What effect has the transformation had on the lowest exam mark and what effect has the transformation had on the highest exam mark - STATS 201/8 Data Analysis
an array of 30 led bulbs is used in an automotive light. the probability that a bulb is defective is 0.001 and
1. The local county is considering a budget proposal that would reallocate funding to renovate the city pools. A survey is conducted to measure public opinion of the proposal. A total of 200 individuals responded to the survey. Fifty of the respon..
The number of viewers of American Idol has a mean of 29 million with a standard deviation of 5 million. Assume this distribution follows a normal distribution.
The following are a sample of Motorola's stock prices in March 2007.- Find the mean and the variance, plot the data, determine outliers, and construct a box plot.
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