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An article states that movie attendance declined in 2005. A survey found that 720 of 1000 randomly selected adult Americans preferred to watch movies at home rather than at a movie theater. Is there convincing evidence that the majority of adult Americans prefer to watch movies at home? Test the relevant hypotheses using a 0.05 significance level. (For z give the answer to two decimal places. For P give the answer to four decimal places.)
z=
p=
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the lengths in centimetres of nails produced in a factory are normally distributed with mean 4.0 and variance 0.0016.
Does achieving a high grade in reading cause an individual to earn a high grade in Statistics? Explain your answer with reference to the term lurking variable.
A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons:
As the correlation coefficient increases from 0.85 to 0.88, do the points of the scatter plot move toward the regression line, or away from it?
A bank has the following data on the gender and marital status of 200 customers.What is the probability of finding a single female customer? Is marital status independent of gender? Explain using probabilities.
Make an interval estimate the population means score for the daycare children so that you are 95% confident that the true mean is in your interval.
Locate value of the population mean in your sketch and make an estimate of the standard deviation
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments. If there is a difference between the two groups o..
The marketing department likes to know patterns about the consumers who call the 1-800 phone bank with questions/problems.
A standard deviation of $3000. find the salaries for teachers in the bottom 10% and upper 10%, then transform from a z score to an x-score.
a shipping company claims its boxes can carry 36 lb. the production design allows the boxes to be uniform in
manganese has a density of 7.44 gcm3. given that the activation energy for vacancy formation is 1.1 evatom calculate
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