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the wall street journal reported that a travel study conducted in 2011 found that 28 of baby boomers those born between
a sample of 188 randomly selected students found that the proportion of students planning to travel home for
the mean amount of money spent on lunch per week for a sample of 100 students is 21 if the margin of error for the
it is generally believed that nearsightedness affects about 12 of children a school district gives vision tests to 133
from a random sample of 6 students in an introductory finance class that uses group-learning techniques the mean
lets examine the relationship between cis and hypothesis testsa you calculate a 90 confidence interval for mu and come
a particular camera is sold at an average price of 190 with a standard deviation of 12 in a sample of 50 randomly
you test a new drug to reduce blood pressure a group of 15 patients with high blood pressure report the following
let x be the random variable with mean 10 and standard deviation 4 and y be the random variable with mean 6 and
given that x is normally distributed with mu 3046 and sigma 132 find the probability that x is less than 3095 given
what are the two basic rules of probability relate these rules to the concepts of mutually exclusive events and
one card is selected randomly from a standard 52-card decka what is the probability of drawing a clubb what are the
explain your choice of answer to below questionssuppose a small company that manufactures cereal bars own two scales
suppose we know the sample standard deviation is 10 we have a sample size of 25 we also have a sample mean of 116 we
suppose we know the standard deviation of the population is 37 we have a sample size of 625 we also have a sample mean
the weight of chocolates packed into boxes is distributed normally with a mean weight of 450 grams and a standard
data22 24 26 26 28 30 32 38 44a what is the meanb what is the medianc what is the moded what is the 25th and 75th
according to a survey in a country 34 of adults do not own a credit card suppose a simple random sample of 900 adults
the shape of the distribution of the time required to get in oil change at a 15 minute oil change facility is unknown
at litchfield college of nursingnbsp89nbspof incoming freshmen nursing students are female andnbsp11nbspare male recent
a sample of 16 items produced a mean of 110 and the standard deviation of 25 test the hypothesis that the population
suppose we know that the population standard deviation is 3 we have a sample size of 64 we also have a sample mean of
a sample of 121 customers revealed that 65 of them would like to use on-line shopping facilities find a 90 confidence
a box of chocolates is labelled as containing 500 grams of chocolate you sample 81 boxes and find a sample standard
for statistics class talking bout mean standard deviation z-score and correlationfinally if someone told you that