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When surveying public opinion, they hope to poll at least 1000 adults.
Suppose Pew has compiled a list of 1300 phone numbers to call. What's the probability that they'll reach enough people? Use the steps below to answer this question.
Mean: 0.796
Standard Deviation: 0.0117
Find the z-score that represents 1000 successful contacts in 1300 phone calls.
Find the 90% confidence interval for the variance and standard deviation for the time it takes a state police inspector to check a truck for safety if a sample of 27 trucks has a standard deviation of 6.8 minutes.
Checking the output by almost continuous sampling since the abnormal condition began. What is the probability that in a sample of 10 pieces: Exactly 5 will be defective?
Public Health and Nutrition In case you missed it, the United Nations declared 2008 as the International Year of the Potato.
Write Cumulative distribution function.Find the cumulative distribution function F(x).
let x equal to the grade of a student in a stat course. suppose that x is nu 100. using the traditional method of
A random group of apartments was selected from a city to analize the number of bedrooms they have. Is there evidence to reject the hypothesis that the apartments are equally distributed between 1 bedroom, 2 bedroom, and 3 bedroom apartments, at al..
Mayfair's insurance company proposed a settlement based on lost sales of $240,000 in July and August. Is this amount fair? If not, what amount would you recommend as a counteroffer?
This set of height measurements are recorded in centimeters. Answer the following questions using the Histogram Applet. Is 1.7cm a Plausible mean value? Explain.
the standard normal table shows an area value of 0.8 for a z-score of 0.84. what percentage of the observations of a
Find the mean number of customer complaint calls per week. Find the median number of customer complaint calls per week. Find the variance for the number of customer complaint calls per week
If you reach in the jar and pull out 2 marbles at random, find the probability that both are red. Round your answer to 4 decimal places.
Basket contain 2 white balls, 5 yellow balls and 3 balls consider selecting one ball at a time from the basket.
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