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You bought a new set of tires from the manufacturer who just announced a recall because 12% of those tires are defective.What is the probability that at least one of yours is defective?
A survey of undergraduate students in the School of Business at Northern University revealed the following regarding the gender and majors of the students:
According to US Census Bureau, 7.1% of all births to non-smoking mothers are of low birth weight (
Construct a hypothesis test to determine whether the average weight of a Smoky Bear moving van is more that 12,000 lb. Us a 5% level of significance.
Suppose that a study based on a sample from a targeted population shows that people at a pizza restaurant are hungrier than people at a coffee shop. make an interference based on the results of the study.
Three vehicles with a carrying capacity of 12 passengers each are used to ferry 30 international tourists and 5 local tourists from or tambo airport to vilakazi street,soweto. if the logistics manager randomly assigns the tourists to the vehicles, in..
Determine 95% confidence interval for the population mean, based on the sample mean.
A recent election return indicated that 55% voted for a proposal, 40% voted against it, and 5% abstained. What is the probability that a voter either abstained or voted against the proposal?
When would you use a two population test with a small sample size at your place of employment, in your education, or in politics?
If there are 81 fraternity members, how much should they buy so that using the normal approximation they are 93.32% sure they will not run out?
10.3% of students in statistics actually take the course because they want to. If two students are selected at random, find the probability that both took statistics because they wanted to.
She surveys 100 randomly selected families and finds the mean income to be $96,321 with a standard deviation of $9555.With a0.05, is she correct?
The mean to be $19 and the standard deviation to be 6.8. Find the best point estimate of the population mean and the 95% confidence interval of the population mean.
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