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In a study of the relationship between pet ownership and physical activity in older adults, 594 subjects reported that they owned a pet, while 1939 reported that they did not. Give a 95% confidence interval for the proportion of older adults in this population who are pet owners.
last year a soft drink manufacturer had 21 of the market. in an effor to increase their portion of the market the
a sample of 144 students is taken from a population of 2000 high school students to estimate the proportion of students
What is the probability that the equipment will undergo maintenance if it is performing satisfactorily? what is the probability that the equipment will not undergo maintenance if it is not performing satisfactorily?
What is a p-value in testing hypothesis? How does this p-value help us to decide to/not to reject a Null hypothesis?
Many retail stores offer their own credit cards. At the time of the credit application the customer is given a 10 percent discount on the purchase.
consider the following. give your answers correct to two decimal places.a find the standard score z such that the area
Develop a 95% confidence interval to estimate the difference in SAT math scores from students in Delaware and New jersey.
if we were randomly drawing a sample of one organizaiton from a population of 15 where five are high performers and
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
an entrepreneur is considering the purchase of a coin-operated laundry. the current owner claims that over the past 5
Estimate the true weight with an error of 0.03 grams with 99 percent confidence? How to construct a 95 percent confidence interval for the population proportion of positive drug tests. How to tell if the normality distribution?
in the test of a certain hypothesis the p-value corresponding to the test statistic is 0.0316. can the null hypothesis
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