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A time series graph is helpful for detecting long term trends over the period of time. A stem and leaf plot is the data plot which employs part of the data value as the stem and part of data value as
If weather center monitors and computes the average number of tornadoes that pass by Topeka, Kansas each year, what kind of variable would they be investigating?
The staff at the small company comprises: 4 secretaries, 20 technicians, 4 engineers, 2 executives, and 50 factory workers. If the person is selected at random, find out the probability that he or s
A researcher surveyed college students to study their opinion regarding the proposed change in smoking rules. The researcher asked the group of 30 students - 12 of them supported the change, 13 of t
A random sample of ages of 51 college students has the mean of 15. The population is known to be normal with the standard deviation of 2. Find out the standard error of mean? (round 2 decimal places)
Wind damage repairs in the particular place averaged $10,900 for 70 homes. The population standard deviation was known to be the $2,300. find out the point estimate of population mean?
Using given data table, find out the class interval for the wage table? Using given data table, Find out the midpoint for class with greatest frequency?
Using given data table, total number of employees is 100. By using given data table, find out the cumulative frequency for class $12 to $16?
Using this data table, what is the mean? By Using this data table, Find out the variance?
The covariance between X and Y is 10. The standard deviation of X is 2. The standard deviation of Y is 5. Find out the correlation coefficient between X and Y?
For given dataset, mean is $44.50, median is $44.20 and mode is $40. The distribution of the dataset might be stated as:
The analysis of historical data for Stock A and Stock B states that whenever A goes up, B goes down; and whenever A goes down, B goes up. Find out the sign of correlation coefficient between A and B
If the number of occurences of some phenomenon has a Poisson distribution, then time between occurences has a __________ distribution.
Suppose family incomes are normally distributed with the mu=$16,000 and sigma=$2,000. Find out the probability that the family picked at random will have income between $15,000 and $18,000?
The data given below are final exam scores of 10 randomly chosen statistics student and number of hours they studied for exam. Find out the test statistic t. Find out the critical t0. Define rejection
It is of interest to employers to know how many dependents their employees enfold since this has n effect on how much they may expect to pay out in health care and other benefits.
The waiting time, in hours, between successive speeders spotted by radar unit is continuous random variable with the cumulative distribution function
If joint probability distribution of X and Y is given by
Find out the marginal density of X. Find out the marginal density of Y. Find out the probability that the drive-in facility is busy less than one-half of the time.
In testing lethal concentration of the chemical found in polluted water, it is found that certain concentration will kill 40% of the fish that are subjected to it for 24 hours. If five fish are plac
Assume a professor randomly picks three new teaching assistants from the total of 20 applicants-12 male and 8 female students. Let X be the number of females who are hired.
Approximation of parameters of Binomial distribution and computation and depiction of Binomial Probabilities
Explain drawing Histogram using Analysis Tools of Excel and detecting the outliers. Produce histograms for both frequencies showing values on top of the bars and the correct annotation on both axes.
Computation of Mean and Median and Standard Deviation using Excel formulas. Calculate and record the mean and the median and the standard deviation of the data set.
Explain Hypothesis testing with one way ANOVA and Tukey's test. 29 randomly selected subjects were exposed to commercials shown in more involving programs