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Sixty percent of the employees in adepartment are women. One third of the women drive foreign cars. The rest drive domestic cars. Twenty five percent of the men in the department drive foreign cars. One person is randomly selected from the departmental files. Use this information to construct a probability table and
(1) calculate each of the following probabilities :
a) P(foreign cars)-probability that the selected person drives a foreign car.
b) P(a women and domestic car).
c) P(a man and domestic car).
(2) Are the events women and the foreign car owner inependent ? Why or why not ?
Suppose the number of tickets written per day follows a Poisson dictribution with mean of 6.5 tickets per day. Interpret the value of the mean.
Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks has an average content of 2.25 deciliters.
the total number of cars and light-duty trucks sold in 2013 was 2.234 million while 1.346 million were sold in 2009.
Five percent of the respondents gave $25,000 or more to charity over the previous year. Develop a 95% confidence interval for the proportion who gave $25,000 or more to charity.
a fast food center wishes to estimate the proportion of people in its city that will buy its products. suppose the true
For the following hypothesis test where H 0 : m £10 vs. H a : m >10, we reject H 0 at level of significance a and conclude that the true mean is greater than 10 when the true mean is really 8.
Evaluate the value of the F statistic for Devices- I plan an experiment to test the latest conflicting diet programs. The factor for Diet will involve three different levels: low fat, low carbohydrate, and low calorie. The other factor will involve..
A husband and wife make their decisions independently of each other, and then they compare their decisions. If they agree, the decision is made; if they do not agree, then further consideration is necessary before a decision is reached.
For each of the following, identify the scale of measurement (NOIR) and the best measure of central tendency for the data.
two teams of workers assemble automobile engines at a manufacturing plant in michigan. a random sample of 145
Calculate the P-value for the test of the hypothesis p1 - p2=0. Let p1 represent the population proportion of eligible students in Pennsylvania.
Is there evidence of difference in mean life of bulbs produced by the two kinds of machines. What is your conclusion?
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