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In order to ?nd out whether children with chronic diarrhea have the same average hemo- globin level (Hb) that is normally seen in healthy children in the same area, a random sample of 10 children with chronic diarrhea are selected and their Hb levels (g/dL) are obtained as follows.
12.3 11.4 14.2 15.3 14.8 13.8 11.1 15.1 15.8 13.2
Do the data provide suf?cient evidence to indicate that the mean Hb level for children with chronic diarrhea is less than that of the normal value of 14.6 g/dL? Test the appropriate hypothesis using α = 0.01. Draw a box plot and normal plot for this data, and comment.
there is a 25 chance that a fuse of a certain type is defective. approximate the probability of having more than or
Sometimes data is easy to collect, at other times it may not be as easy. Sometimes in the real world the number of things/people we want to collect data from or about are so huge and we have to make decisions on how this can be done in as reliable a ..
construct a one-page description to introduce one-way anova. you need to mention why anova is useful how it is carried
Manufacturer of guitar amplifiers markets one of its models, Vagabond, at a power rating of 45 watts. GuitarGod magazine suspects that this rating is inaccurate for this year's model of the amp. In a random sample of 32 units of this year's version o..
A campus organization will select one day of the week for an end of year picnic. Assume that the weekdays, Monday through Friday, are equally likely and that each weekend day
an electronic fuse is produced by two production lines in a manufacturing operation. assume that both production lines
What would be your best point estimate for average Sales in weeks for which Newspaper advertising were $1 million? What would be an appropriate interval estimate for this?
A study of 25 graduates of four-year colleges by the American Banker's Association revealed the mean amount owed by a student in student loans was $14,381.
The researchers found that subjects who answered immediately made the best decisions and that "the longer our participants thought about their answers, the more likely they were to include irrelevant information at the expense of relevant informat..
How large a sample is needed to estimate the true proportion of homeowners who have snow blowers to within 5% using a 98% confidence level?
a manufacturer claims the average life of a product is 500 hours. the lifetime of the product is assumed to follow an
the corrosive effects of various soils on coated and uncoated steel pipe was tested by using a dependent sampling plan.
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