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1. An experiment is run that is claimed to have a binomial distribution with p = 0.15 and n = 18 and the number of successes is recorded. The experiment is conducted 200 times with the following results:
Number of Successes
0
1
2
3
4
5
Observed Frequency
80
75
39
6
Using a significance level of 0.01, is there sufficient evidence to conclude that the distribution is binomially distributed with p = 0.15 and n = 18?
2. Data collected from a hospital emergency room reflect the number of patients per day that visited the emergency room due to cardiac-related symptoms. It is believed that the distribution of the number of cardiac patients entering the emergency room per day over a two-month period has a Poisson distribution with a mean of 8 patients
per day.
7
9
10
8
12
14
11
16
Use a chi-square goodness-of-fit test to determine if the data come from a Poisson distribution with mean of 8. Test using a significance level of 0.01.
there are six identical elements in active parallel configuration with a time to failure density function of
If Mr. Cue were to order 1000 kilograms (instead of EOQ) of ivory at a time, what would be the length of the cycle between orders?
the director of broadcasting for a cable company took a sample of 522 people. testing was to determine the popularity
Instead of representing a frame as a pair of lists, we can represent a frame as a list of bindings, where each binding is a name-value pair. Rewrite the environment operations to use this alternative representation.
In fact, the amount of coverage is known to be approximately normally distributed with a standard deviation of 25 square feet. How large a sample should be taken to estimate the true mean coverage of all 1-gallon cans to within 5 square feet with ..
question 1using the telephone numbers listed in your local directory as your population randomly obtain 20 samples of
assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of 2275
Using this he gives a cost estimate of $24,000 for a new order for 500 units. Is this a reasonable cost estimate? Explain why or why not. Looking at the data on file, can you give a better cost estimate?
in a region 80 of the population have brown eyes. if the 10 people are randomly selected find the probability that at
in a region 80 of the population have brown eyes. if 12 people are randomly selected find the probability that at least
During the course of a year, 38.0% of the 213 merchant ships lost were general cargo carriers, while 43.8% of the 219 ships lost during the following year were in this category.
In this the anniversary of the sinking of the Titanic, it is interesting to look at the distribution of those who survived, and those who died. The table below describes the number of men, women and children who were passengers on the Titanic.
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