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Twenty five young people were sampled in a survey to be used in determining the average expenditures (in dollars) for an evening of dining out. The data is as follows:
253 134 178 95 101 169 10480 267 152 0 113 131 15111 198 245 118 124 225 055 161 69 129
From these of expenditures, construct and/or determine the following (using 5 classes):
a. Make a frequency distribution table.
b. Create a histogram.
c. Create a cumulative relative frequency Ogive chart.
d. Determine if there are any outliers (show all work).
Write down the name of 4 parts of the regression equation.
Assume that female students' heights are normally distributed with a mean given by µ = 64.2 in. and a standard deviation given by σ = 2.6 in.
Suppose you were a consultant who has been engaged by an airline company to estimate the 'fudge' factor for passenger's weights. Describe an experiment you would consider to estimate this 'fudge' factor. Discuss the statistical test you would cons..
Whole Foods needs at least 1,000 units of beets. The Ames supplier can supply at least 400 units and the Zearing supplier can supply no more than 900 units. Develop constraints for these conditions.
A company has set a goal of developing a battery that lasts over 5 hours in continuous use in a sample of 42 of these batteries the mean life time was 306.25 hours with a standard deviation of 29.31
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
Do the above values appear to be in statistical control, justify your answer?
At a used-book sale, 100 books are adult books and 160 are children's books. Of the adult books, 70 are nonfiction while 60 of the children's books are nonfiction. If a book is selected at random, find the probability that is is:
Consider the following portion of an electric circuit with three relays. Current will flow from point A to point B if there is at least one closed path when the relays are activated. The relays may malfunction and not close when activated.
If a random sample of 10 people found that 9 were pro-life (i.e., 90%), while another random sample of 1,000 people from the same population found that 550 were pro-life (i.e., 55%), which would you find more significant?
Of the nine members of the board of trustees of a college, five agree with president on a certain issue. The president selects three trustees at random and asks for their opinions. What is the probability that at least two of them would agree with..
Create a 95% confidence interval for the population mean days absent for sickness based on this sample. Select the answer closest to your results.
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