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Question: In 2006 the age distribution for mothers in the United States who had a first child that year was as follows (Martin et al., p. 31):
Under 20 20-24 25-29 30-34 35 and over
20.9% 30.6% 24.7% 15.7% 8.1%
a. Draw a bar graph to represent the data.
b. Draw a pie chart to represent the data.
c. Explain which picture-bar graph or pie chart-you think is more informative.
the purpose of this project is to investigate the cost ofa home mortgage and to determine the monthly payment.a couple
for a continuous random variable x p27 ? x ? 74 0.35 and px gt 74 0.1. calculate the following probabilities. how
Discuss the utility of the graphic method of presenting statistical data. What points should be taken into account in the construction of graphs? Prepare more than ogive curve with imaginary figures.
According to the Internal Revenue Service, income tax returns one year averaged $1,332 in refunds for taxpayers. One explanation of this figure is that taxpayer
A survey found that at most 40% of those surveyed planned to get more sleep. A sample of 300 people found that 140 of them plan to get more sleep. For alpha = 0.01, what is the critical value?
a time for the 100-meter spring of 15.1 seconds at a school where the mean time for the 100-meter sprint is 17.6
A number of minor automobile accidents occur at various high-risk intersections. A study was done. Eight intersections were chosen at random. The number of minor accidents during a 6-month period before and after the modifications were:
a researcher selects a sample of 6 professors 6 students and 6 administrators at a local school and has them rate the
Association. Suppose you were to collect data for each pair of variables. You want to make a scatterplot. Which variable would you use as the explanatory.
is there a relationship between gender and the type of car driven? a random sample of 1000 adults was obtained. the
In a sample of 1100 U.S. adults,172dine out at a restaurant more than once per week. Two U.S. adults are selected at random from the population of all U.S. adults without replacement. Assuming the sample is representative of all U.S. adults, comp..
Explain how you use data or summaries of data every day-or how data or summari es of data are used on you. Give examples that are different from those provided in the link above,
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