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What is the mean time until a packet is formed, that is, until five messages arrived at the node? What is the standard deviation of the time until a packet is formed?
Assume that a women's heights are normally distributed with a mean given by u= 63.2, and a standard deviation given by a=3.1 in. If 1 woman is randomly selected, find the probability that her height i
Explain why it is necessary to have more than one standard procedure for defining and measuring central tenedncy, and why cant we just have a singe measure of central tendency to use with all datase
From the given data what is the accumulated estimate of the common population standard deviation? (Assume that A and B have the same variance and the samples are independently gathered from two norm
Assume that a procedure yields a binomial distribution with a trial repeated n times. use the binomial probability formula to find the probability of x successes table to find the probability of x s
Determine the probability that the sample will indicate an adjustment is not needed.c) Assuming that 10 pounds is the mean weight, what should the cutoff be if the company wants no more than a 5% c
What is the upper confidence limit of an approximate 95% confidence interval for the difference between the underlying proportion of boys who said that they had ever drunk beer and the underlying pr
The mean score of the first calculus exam was 81%. The standard deviation was 12%. Find the smallest interval about the mean that contains at least 71% of the scores. Could you please explain all th
The variability in the value of a statistic from sample to sample is known as? Characteristics of a sample are known as?
a) Write down the sample space for this experiment. b) Find the probabilities of the above mentioned events.
Cereal is sold by weight not volume. This introduces variability in the volume due to settling. As such, the height to which a cereal box is filled is random.
A soda company wants to stimulate sales in this economic climate by giving customers a chance to win a small prize for every bottle of soda they buy. There is a 15% chance that a customer will find
To determine the median life span of certain species of animal is greater than 7 years a random sample of 22 observations were made and life span in years is the following:
What is the probability of having a Republican majority? If this special group of Republicans and Democrats contains 10 women and 5 men, what is the probability of forming this five member committee
The mean score of the first calculus exam was 81%. The standard deviation was 12%. Find the smallest interval about the mean that contains at least 71% of the scores.
Suppose we watch the price of the Dow Jones Industrial Index for three days. Write down the sample space for this experiment.
If the heights for a certain type of cereal and box have a normal(12,0.5) distribution in units of inches, what is the chance that a randomly chosen cereal box has a height of 10.7 inches or less?
If we roll a pair of fair 6 sided die, let Z denote the max (largest) of the outcomes on the two dice. Construct the probability distribution of Z and compute its expected value.
For this population find the probability that a randomly chosen foot is less than 26 centimeters long? What is the 95th Percentile?
A real number X is drawn at random from the interval (0,1). A rectangle is formed with sides X and (1-X). Denote the area by Y = X*(1-X).
Suppose that, on average, a baseball player gets a hit once every three times she bats. What is the probability that she gets four hits in four at bats?
If p = .05, the critical value for rejecting the null hypothesis is
The research hypothesis for this question is that the mean anxiety level of the students who participate in the workshops will be _____ those who do not.
What is the prior probability of the bid being successful (that is, prior to the request for additional information)? What is the conditional probability of a request for additional information given
A psychologist is conducting a study in which 30 students attend workshops by the speaking center for one hour per week over six weeks to reduce anxiety about public speaking. It is known that anx