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egbert techster is very serious about winning this years all-american soap box derby competition since there is no
the developer of a new welding rod claims that spot welds using his product will have greater strength than
a pharmaceutical firm has checked the cholesterol levels for each of 30 male patients then provided them with fish-oil
each of 20 consumers is provided with a package containing two different brands of instant coffeea week later they are
a university president randomly selects 10 tenured faculty from the college of arts and sciences and 10 tenured faculty
a trucking firm is considering the installation of a new low-restriction engine air filter for its long-haul trucks but
in an attempt to measure the emotional effect of a proposed billboard ad an advertising agency checks the pulse rate of
the students in an aerobics class have been weighed both before and after the 5-week class with the following results
1 summary data for two independent samples are p1nbsp 036 n1nbsp 150 and p2nbsp 029 n2nbsp 100 use the 0025 level of
a bank manager has been presented with a new brochure that was designed to be more effective in attracting current
in a study by the united dairy industry association 42 of 655 persons age 35-44 said they seldom or never ate cottage
during the course of a year 380 of the 213 merchant ships lost were general cargo carriers while 438 of the 219 ships
of 200 subjects approached by interviewer a 45 refused to be interviewed of 120 approached by interviewer b 42 refused
community national bank is using an observational study to examine the utilization of its new 24-hour banking machine
a telephone sales solicitor trying to decide between two alternative sales pitches randomly alternated between them
in a preliminary study the us veterans affairs department found that 309 of the 81 soldiers who were near an accidental
the credit manager for braxtons department store in examining the accounts for various types of customers served by the
safety engineers at a manufacturing plant are evaluating two brands of 50-ampere electrical fuses for possible purchase
one of the measures of the effectiveness of a stimulus is how much the viewers pulse rate increases on exposure to it
it has been reported that males who are 55 or older spend an average of 43 minutes on-line versus 38 minutes on-line
repeat given exercise using the z-test approximation to the unequal-variances t-testexercise fred and martina senior
according to the us bureau of labor statistics personal expenditures for entertainment fees and admissions averaged 349
surveys of dog owners in two adjacent towns found the average veterinary-related expense total for dog owners in town a
a study of 102 patients who had digestive-tract surgery found that those who chewed a stick of gum for 15 minutes at
a study found that women of normal weight missed an average of 34 days of work due to illness during the preceding year