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assignment 1 hypothesis testingin a survey of 1005 adult americans 46 indicated that they were somewhat interested or
in a survey done in 2010 students in a statistics class were asked how do you prefer to use your cell phone-to talk or
refer to exercise students also were asked what grades they usually get in school for twelfth-grade students who
this is the same as exercise 1 the five-number summaries of the fastest ever driven data given in case study 1 were as
refer to the five-number summaries given in exercise 1a using the appropriate summary value compare the location of the
refer to given exercisea reconstruct the table using the two categorical variables letter listed first s or q and
refer to exercise concerning feelings about weight to compare the men and women draw a bar graph of the percents found
hand et al 1994 p 148 provide data on the number of words in each of 600 randomly selected sentences from the book
about how many music cds do you own responses to this question for 24 students in a senior-level statistics course in
a set of exam scores is as follows75 84 68 95 87 93 56 87 83 82 80 62 91 84 75a draw a stem-and-leaf plot of the
for each of the following situations which is the explanatory variable and which is the response variablea the two
in 2006 the age distribution for mothers in the united states who had a first child that year was as follows martin et
a sample of college students was asked how they felt about their weight of the 143 women in the sample who responded 38
can you think of possible explanations for the observed relationship between use of nightlights and myopia other than
redo the bar graph in given figure using counts instead of percentages the necessary data are given in tablewould the
using the boxplots in given figure what can you say about the respective handspans for males and females are there any
a resistant statistic is a numerical summary of the data that is resistant to the influence of outliers in other words
why do you think measurements with a bell-shaped distribution are so common in nature for example why do you think
a sociologist assembles a dataset consisting of the poverty rate per capita income serious crime rate and teen birth
suppose that in a national survey of 620 randomly selected adults each person is asked how important religion is to him
in each situation explain whether it would be more appropriate to treat the observed data as a sample from a larger
in each situation explain whether it would be more appropriate to treat the observed dataset as sample data or as
for each of the given statistical summaries explain whether it is a population parameter or a sample statistica in the
read given case study about prayer and blood pressurea what was the sample size for the observational study conducted
read given case study about aspirin and heart attack ratesa what two variables are measured on each individual in case