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Find the value of Proportion and construct a 90% confidence interval for proportion.
1. Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is the value of p-hat?
2. Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. Find a 90% confidence interval for p.
It falls into the region of alternative is accepted greater than .95
How large sample should be selected in order to obtain p estimate with a bound of 0.08 on the error of estimation.
The point estimate for the difference between the proportions is:
Use the study to estimate the risk of an air bag fatality on a child seated on the front passenger seat.
Find the critical value z that corresponds to the given confidence level of 90%.
Compute the population attributable risk for smoking and lung cancer.
When we carry out a goodness of fit chi-square test, the expected frequencies are based on the alternative hypothesis
Test for significant differences among weight losses for the five diets, and perform all pair wise comparisons using:
What is the probability of finding exactly four watch soap operas?
At a large commercial bakery, one of the measures familiar with evaluate employees is the number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and bro..
Find the probability that a randomly selected employee earns less than $5.43.
How many days should be considered if a 95 percent confidence is used and the estimate is to be within one hundred dollars?
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