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You draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and reshuffle the deck.
a. Are the outcomes on the two cards independent? Why?
b. Find P (3 on 1st card and 10 on 2nd)
c. Find P (10 on 1st card and 3 on 2nd)
d. Find the probability of drawing a 10 and a 3 in either order.
Write Cumulative distribution function.Find the cumulative distribution function F(x).
The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The proportion of batteries with lifetimes exceeding 520 hours is approximately.
Compute a 95% confidence interval for the population proportion of positive drug tests. Explain why is the normality assumption not a problem despite the very small value of p.
Why do we have so many several measures of central tendency? Are all really essential or do they essentially give same information?
compute the expected value and variance of U.Determine Expected value and variance using uniform distribution.
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
Compute Pearson's correlation coefficient between age and amount spent on this particular product.
A random-effects ANOVA refers to the analysis where the levels included in the study represent a random sample of all levels that exist.
Statistical Hypothesis test for the given sample
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of four students was taken in order to estimate the mean study time for the population of all students.
A survey taken in a restaurant shows the following number of cups of coffee consumed with each meal. Construct an ungrouped frequency distribution.
Use α =.01 and test for a significant difference. What is your conclusion?
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