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n a survey 85% of the voters support a particular referendum. If 40 voters are chosen at random and X is the number of voters that support this referendum, find the standard deviation of X.
A study of 200 apples trees showed that the average number of apples per tree was 1000. The standard deviation of the population is 200. Which of the following is the 98% confidence interval for the mean number for all apples.
If the names of these 100 people in the building are still unknown but a room is allowed to lodge one tenant at most , then are there how many ways of room occupation?
In 2010, the average age of students at UTC was 22 with a standard deviation of 3.96. In 2013, the average age was 24 with a standard deviation of 4.08. In which year do the ages show a more dispersed distribution? Show your complete work and supp..
At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. The filling process follows a normal distribution with a known process standard deviation of 4 ml.
Determine the probability that between 5 and 10 minutes will pass between successive occurrences.
What I need are relevant questions for a survey questionnaire that will be valid for testing each of 3 hypotheses. Include the variables tested.
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles and a standard deviation of 7,000 miles. What is the probability of having a tire that lasts more than 80,000 miles?
The United States Postal Service reports that 95 percent of first class mail within the same city is delivered within two days of the time of mailing. Six of the letters are randomly sent to different locations.
Four components of a time series are secular trend, cyclical variation, seasonal variation, and irregular variation (Lind, 2005). Briefly describe each of these components and provide a real-world example of one component.
The four characters required for the passcode, the first must be a number,the 2nd and 3rd must be a number. how many different passcodes can you form?
Entrepreneurship researchers are interested in the relationship between entrepreneurial behaviour of firms, such as innovation or new business venturing, and performance indicators, such as sales growth or profitability.
A consumer products testing group is evaluating two competing brands of tires, Brand 1 and Brand 2. Tread wear can vary considerably depending on the type of car
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