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1 at what age do babies learn to crawl does it take longer to learn in the winter when babies are often bundled in clothes that restrict their
1at what age do babies learn to crawl does it take longer to learn in the winter when babies are often bundled in clothes that restrict their
1we are interested in comparing the proportions of males and females who think earning a large salary is very important to them i surveyed 200 of
1colleges conduct student evaluations of instruction to determine if there are patterns of either excellence or the lack thereof by their instructors
1in the table below we examine the relationship between final grade and the reported hours per week each student said they studied for the coursein a
1a study was conducted to explore the relationship between a childs birth order and his or her chances of becoming a juvenile delinquent the subjects
1a study was conducted to explore the relation between alcohol consumption and hypertension 7400 nurses were surveyed and information about the
1a study was performed to examine the personal goals of children in grades 4 5 and 6 a random sample of students was selected for each of the grades
1a study to compare two types of infant formula was run at two sites one in atlanta and the second in denver the study was run over a three-week
1a sample of 50 male and 50 female infants were put on an experimental infant formula after two weeks the parents of each infant were asked to fill
1a large study was done to compare two treatments for recurring ear infections in young children a total of 150 subjects were recruited for the study
1students often incorrectly believe that inference for a population proportion based on the sample proportion is always valid if n gt 30 they are
1i want to know which of two manufacturing methods will be better i create 10 prototypes using the first process and 10 using the second there were 3
1i read an article about a new drug which stated that the incidence of side effects was similar to placebo p-value gt 005 i want to know if the
1a poll finds that 54 of the 600 people polled favor the incumbent shortly after the poll is taken it is disclosed that he had an extramarital affair
1a bank wants to get new customers for their credit card they try two different approaches in their marketing campaign the first promises a cash back
1a manufacturer receives parts from two suppliers an srs of 400 parts from supplier 1 finds 20 defective an srs of 100 parts from supplier 2 finds 10
1a noted psychic was tested for esp the psychic was presented with 400 cards face down and asked to determine if each card was matched with one of
1an inspector inspects large truckloads of potatoes to determine the proportion p with major defects prior to using the potatoes to be made into
1a newspaper conducted a statewide survey concerning the 2000 race for state senator the newspaper took a random sample assume it is an srs of 1200