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Many people do not "like" or "trust" single point estimates for things they need measured. Looking back at the data examples you have provided in the previous discussion questions on this issue, how
Find the joint probabilty of A and B for the following
The table below shows the typical mass of eight animals. Plot and label these values on a log scale. How many orders of magnitude larger is a blue whale than a hummingbird?
During the past three weeks, downloads for a personal finance program have been as follows: Week Downloads 1 150 2 175 3 145 4 135 Using exponential smoothing with a smoothing constant of 0.2, calcu
If the MAE for a set of data was found to be 2.5 using a 3-week SMA, 3.5 using a 4-week SMA, 3.1 using a 5-week SMA, and 3.0 using a 6-week SMA, then which of these four SMA methods is most accurate
An eight-cylinder automobile engine has two misfiring spark plugs. If all four plugs are removed from one side of the engine, What is the probability that the two misfiring plugs are among them?
An injection molding process for making auto bumpers leaves an average of 1.3 visual defects per bumper prior to painting. Let Y and Z be the numbers of visual defects on (respectively) the next two
Given this information, if an alpha level of .05 is used, the critical value for testing whether the two variables are independent is x2 = 3.8415. True/False
In general no matter what the complexity of a model is; which of the following statement is correct?
The weight of cereal in a box is normally distributed with mean 16.5 ounces and standard deviation 0.1 ounce. What percentage of the boxes contain less than 16 ounces of cereal?
A bank manager is trying to estimate the amount of fraud that will happen on a day when cyber crooks break into the bank's Website and many hackers collaboratively create a flood of frauds.
Find: E(X), Var(X), E(Y), Var(Y). X= number of dimes which come up heads. Y= value in cents of dimes which come up heads.
Find and interpret the expected number of trucks that are speeding. Find the standard deviation for the number of trucks that are speeding.
The probability of getting a ticket when you don't pay the parking meter is 0.3. What is the probability of getting at least one parking ticket in five occasions when you do not pay the parking mete
Suppose that x has a binomial distribution with n = 50 and p = .6, so that ? = np = 30 and ? = sqrt( np(1 - p) ) = 3.4641. Calculate the following probabilities using the normal approximation with t
The population of a colony of rabbits grows exponentially. The colony begins with 10 rabbits; five years later there are 340 rabbits. Give a formula for the population of the colony of rabbits as a
The table below shows the typical mass of eight animals. Plot and label these values on a log scale.
What is the z-score for a blood pressure reading of 140? The proportion with high blood pressure is ? What proportion of the populatin has systolic blood pressure in the range from 98 to 140? Find the
What is the standard deviation for the distribution of these exam scores? What score does a student need to achieve in order to be at the 95th percentile? How about at the 99th percentile?
The coach said the tickets were randomly given to three of the 10 girls, but his two girls were among the three chosen. Under the assumption that the three tickets were randomly given away, what is
Suppose your daughter is on a swim team which has a total of 10 girls. Two of the girls are daughters of the coach. The team was given three free tickets to watch a national swim meet.
Suppose the population of a town is shrinking according to a logistic model with initial population 1000 and carrying capacity 10,000. if the population shrinks to 682 after two years, what will the
A health study reported that in one country, systolic blood preassure reading hav a mean of 123 and a standard deviation of 14. A reading above 140 is considered to be high blood pressure. Complete
The PIRON Software Company currently develops marketing software for primarily service-based organizations. Based upon previous data, the leaders of the organization plan to establish a pilot in the