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a machine cuts plastic into sheets that arenbsp50nbspfeet 600nbspinches long assume that the population of lengths is
in a survey of 2307 adults 700 say they believe in ufos construct a 90 confidence interval for the population
a training program designed to upgrade the supervisory skills of production-line supervisors has been offered for the
samples of size n 100 are taken from a population that has a mean of 50 and standard deviation of 15 find the z score
1 use the confidence interval to find the margin of error and the sample mean 017803802find the minimum sample size n
what are the 3 required assumptions for the appropriate use of the independent grpt-testwhat are the 3 required
the sole distributor of super bowl tickets estimates that 75 of all super bowl tickets sold in every market are
the distribution of heights ofnbspsouth american women aged 22 to 36nbspnbspis approximately normally distributed with
the number of minutes that anbspcustomer waits on the phone to speak with a representative is shown by a uniform
a find the five-number summary of the following set of datanbsp148
the following data is of the age of an item and the associated price of that itemnbspage
a company produces electric insulatorsnbspif the insulators break when in use a short circuit is likely to occurnbspto
the population has a mean of 678 and the population standard deviation is known to be 583 use a 005 level of
1 the following data represent two frequency distributions for 10 people in an attitude studynbspthe x data are scores
the mean weight of cardboard discarded but not recycled by american houses in one week is less than 3 poundsa the
two stocks a and b have a historical correlation indistinguishable from zero the probability that stock a increases
theoretically if you toss two coins together forty-eight times how many times should you get a head and tail input your
the following frequency table summarizes the distances in miles of 100 patients from a regional hospitaldistance
consider a population of values has a normal distribution with mu1931 and sigma895if we were working with a sample size
our pulse rate is extremely important because it is difficult to function without it physicians use pulse rates to
in a study conducted for the state department of education 30 of the teachers who left teaching did so because they
background the annual mean return on abc stock is around 15 and the annual standard deviationnbspis around 25 assume
what are the formula definitions for the degrees of freedom in anova the degrees of freedom between and the degrees of
need help in this hypothesis testing questiona developmental psychologist was studying a new program to reduce anxiety
a population a and population b both have a mean of 60 inches with a sd of 50a random sample of 40 people is picked