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Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
It costs ABC $0.5 per pound to ship the box containing the weights. Because it's an odd-shaped package, though, shipping the bar costs $0.6 per pound plus a $10 surcharge. Find the mean and standard deviation of the company's total cost for shippi..
For a normal population with u. = 80 and a = 20 which of the following samples is least likely to be obtained?
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
An educational study uses a simple pre-post design to assess the efficacy of a computer tutor for solving inequalities. Twelve pilot students participate. Each student is given a pre-test, then participates in six sessions using the tutor, then i..
Decide whether experiment is binomial, Poisson or neither based on info given. Each week man plays game in which he has a 21% chance of winning.
A researcher used stepwise regression to create regression models to predict Birthrate (births per 1000) using five predictors:
Identify the indicated values or interpret the given display. In a survey of 703 randomly selected workers,
A coin is tossed 20 times. A person, who claims to have ESP is asked to predict the outcome of each flip in advance. She predicts correctly on 14 tosses.
Construction of histogram and pie chart for continuous data
A confidence interval increases in width as:
The 95% confidence interval for the mean of the sampling distribution of the mean is about:
What is the 95% confidence interval for the true average number of hands per hour during peak hours?
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