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five percent of the eyeglasses sold at an optical retailer have tinted lenses forty pairs of glasses are sold on a
in the game of roulette a player can place a 7 bet on the number 18 and have a 138 probability of winning if the metal
suppose that 20 of men p20 and 15 of women p 15 are carriers of a particular genetic trait that trait can only be
the weights of ice cream cartons are normally distributed with a mean weight of 20 ounces and a standard deviation of
thirty-eight percent of consumers prefer to purchase electronics online you randomly select 16 consumers find the
a restaurant serves hot chocolate that has a mean temperature of 175 degrees with a standard deviation of 81 degrees
on average the parts from a supplier have a mean of 975 inches and a standard deviation of 122 inches find the
a process is normally distributed with a mean of 104 rotations per minute and a standard deviation of 82 rotations per
a puck company wants to sponsor the players with the 20 quickest goals in hockey games the times of first goals are
the random variable x takes on the values 5 20 30 and 200 with probabilites 060 030 008 and 002 respectivelyuse the
if we are interested in job satisfactionname a variable that correlates with job satisfaction but we do not have
recent test scores on the law school admission test lsat are normally distributed with a mean of 1624 and a standard
sixty-seven percent of adults have looked at their credit score in the past six months if you select 31 customers what
a laboratory worker finds that the 3 of his blood samples test positive for the hiv virus in a random sample of 70
a bottle of water is supposed to have 12 ounces the bottling company has determined that 98 of bottles have the correct
the probability of someone ordering the daily special is 52 if the restaurant expected 96 people for lunch how many
fifty-seven percent of employees make judgements about their co-workers based on the cleanliness of their desk you
a professor records the following final exam scores 68 6 m sd students scoring in the top 18 get an a what is the
a researcher records the following body mass index bmi scores for a group of participants 291 13 m sd participants who
1 prince georges county publicnbspschools wants to access the effectiveness of its new 1st grade reading programnbspten
a researcher records the following number of birdcalls made during an experimental session with robins 84 09 m sd
a researcher determines that students study an average of 60 15 m sd minutes per week assuming these data are normally
a system consists of five independent components in parallel the system will work if at least one of the five
a researcher records the sound in decibels during a series of lessons taught by a substitute teacher at a local
what is the 99 confidence interval for a sample of 52 seat belts that have a mean length of 856 inches long and a