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According to a Gallup poll conducted March 5-7, 2001, 52% of American adults think that protecting the environment should be given priority over developing energy supplies is more important, and 6% believe the two are equally important. The rest have no opinion. " Suppose that a a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
a)50 or more think protecting the environment should be given priority.
b) 30 or fewer think that developing energy supplies is more important.
c) 5 or more have no opinion.
Which is the probability that the median of the sample is between $17 and $20?
Researcher is interested in testing whether there are differences in mean between population one and population two.
Determine probability that number of boats constructed next month will be between 4 and 7 (both inclusive).
Given this, compute the following probabilities for demand during lead time(DDLT).
A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive. A company asks 12 job applicants to take a lie detect test. Suppose that all 12 applicants answer truthf..
Test, at the 5% level of significance, whether the population standard deviation of hours spent studying is less than 10. Use the Critical value approach.
Be certain to mention the direction of the relationship, the strength of the relationship, and whether our findings are statistically significant
A professor asked her sophomore students, "How many drinks do you typically have per session? (A drink is defined as one 12oz beer, one 4oz glass of wine, or one 1oz shot of liquor.)"
Explain can you find out statistical support in this poll for that statement. When it comes to the war in Iraq, among which of the subsiquent statements comes closer to your point of view.
The data in the scatterplot below are an individual's weight and the time it takes (in seconds) on a treadmill to raise his or her pulse rate to 140 beats per minute. The o's correspond to females and the +'s to males.
To report their finding they want to create a 90% confidence interval. What would be the margin error for this confidence interval?
Suppose you know that the distribution of sample proportions of nonresidents in samples of 200 students is normal with a mean of 0.04 and a standard deviation of 0.03.
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