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heights in centimeters of girls at the start of 1st grade are approximately normal with mean 122 standard deviation 5
weights in kilograms of boys at the start of 1st grade are approximately normal with mean 25 standard deviation 5 use
tell whether each of these random variables is binomial if not tell which condition is not met fixed sample size n
we assume the probability of being born in the winter as opposed to spring summer or fall is 025 and the random
assume that overall the proportion of high school seniors with no siblings is 005 if we take a sample of seniors from a
the binomial random variable x counts the number of married students in a random sample of high school seniors where p
two percent of a high schools 100 seniors are married a school survey randomly selects 40 seniors can you report the
the probability of a live birth resulting in a child with down syndrome is approximately 0001a report the mean and
we assume the probability of being born in the winter is 025 and consider the sample proportion born in the winter for
the proportion of people in the united states who speak spanish is about 011 the proportion who speak chinese is about
the proportion of whites in connecticut is 090 the distribution of sample proportion of whites in samples of size 20 is
the proportion of people in the united states who speak spanish is about 011 the distribution of sample count speaking
tell whether each of the following involves a categorical variable a discrete quantitative variable or a continuous
for each of the following situations tell whether the two probabilities should be equala the probability of a student
a survey of households in a farming village in nepal asked do women from your household collect firewood and how many
the random variable x for number of heads in a single coin toss has possible values 0 and 1 each with probability 05a
suppose a waitresss tips average 40 a day with a standard deviation of 10 a busboy earns 50 a day plus 20 of the
the average number of hours worked per week for married men in the early 1990s had a mean of 426 and a standard
in 1988 the probability of a college student being part-time was 043 for part-time students the probability of being
an internet review of home pregnancy tests reports home pregnancy testing kits usually claim accuracy of over 95
gonorrhea is a common infectious disease in 1999 the rate of reported gonorrhea infections was 1322 per 100000 persons
for the various organ transplants performed in the united states in 2003 the probability of surviving for at least a
this table shows probabilities of college freshmen in 1970 and in 2003 calling themselves liberal being in favor of