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1. What is the probability that a sum of 8 will occur on the fifth trial if a pair of dice is rolled?
2. Two coins are continuously tossed until all tails appear. Determine the probability that two tails will show in at most 4 trials.
3. Determine the probability of getting two spades if 8 cards are dealt from a standard deck of 52 cards.
4. Fifteen cards--5 red, 3 green, and 7 white-are put in a box. Seven cards will be drawn at random from the box. Find the probability that 5 of these are white cards.
5. A police station receives an average of 9 calls per hour. What is the protability that exacty 5 calls will loe received by the police station in a randomly selected hour?
a. Calculate the standard error of the sample mean of a sample of 90 measurements. b. Show and interpret a 90% confidence interval for the mean daily rainfall.
direct computers holds a 16 share of the personal computer market. suppose a market researcher believes that direct
Find the predicted value and the residual. Another individual in the NEA data set has NEA increase equal to 143 calories and fat gain equal to 3.2 kg.
Can you conclude that u1 is not equal to u2 at alpha=.05? State the hypothesis in orders of 1-2. construct a 99% confidence interval for the difference in true means. State the confidence interval in terms of 2-1.
At the 99% level, what is your estimate of the population value?
What are the characteristics of the normal curve? What human behavior, trait, or characteristic can you think of that is distributed normally?
test for single mean.according to one investigators model the data are like 400 draws made at random from a large box.
If a transit employee provides a strand of hair for drug testing, state the null and alternative hypotheses in verbal terms, then identify what would constitute a Type I error and a Type II error in this situation.
You estimate that the company will grow at the same rate as its industry, 3.5%, after 2021 indefinitely. If the cost of capital is 10%
The element lutetium is a very heavy, rare, silvery white metal. It is considered to be the most expensive metal in the world. The Maharaja of Gaipajama wants you to babysit with his son.
To test the hypothesis that the average price is $14.25 versus the alternative hypothesis that it is not $14.25, a random sample of 16 daily prices is collected. The results are x‾ = $16.50 and s = $5.8. Using α = 0.05, can you reject the null hyp..
Assume that X is normally distributed with a mean of 6 and a standard deviation of 3. Determine the value for x that solves for each of the following.
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