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a. Differences in age between husbands and wifes ( husband age minus wife age) of married couples have a distribution that approximately follows the normal curve with a mean of 1.5 years and a std of 2.1 years. negative differences indicate that the wife is older. approximately what percentage of marriages are wife older?
b. Give a value such that 40% of marriages have a larger age difference than this value. in other words, what is the 60th percentile of age difference.
Draw the histogram for these data using an initial class boundary of , an ending class boundary of , and classes of equal width.
What name was given to modern stamps from 1967 onwards because of the sculptors cameo bust of the queen?
Based on this sample information find out what percent of variation in starting salaries is described by GPA, and find out the equation that would forecast salary from GPA. Give a scatter plot.
Which gives me 39.5 people. That is the way that my book figured it out for 10 people. I just did to the 50th power instead of to the 10th power. Am I not doing it correct?
Rrepresented as a table or a graph, both shown below. The random variable xi represents the number of complaints, and p(xi) is the probability of receiving xi complaints.
The accounts receivable of a large department store are normally distributed with a mean of $250 and a standard deviation of $80. If a random sample of 225 accounts is chosen, what is the probability that the mean of the sample is between $232 and..
This problem related to Basic Statistics and it discuss about reasons, disadvantages and advantages of choosing qualitative and quantitative methods of data collection
Quadro Corporation has two supermarket stores in a city. The company's quality control department wanted to check if the customers are equally satisfied with the service provided at these two stores.
Let us consider a unity feedback system with a compensator Gc(s) and a pre filter Gp(s), as shown in Figure 10.22. The process is
At the .05 significance level, is the number of units produced on the afternoon shift larger?
Driverless vehicles can be used in warehouses, airports, and many other applications. These vehicles follow a wire embedded in the floor and adjust the steerable front wheels in order to maintain proper direction, as shown in Figure P8.7 (a) [10].
describe the role and importance of listening skills in cross-cultural communication. how can these skills be learned
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