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If alpha=0.05 and p= 0.07 ,would we reject or fail to reject null hypothesis? Please explain.
If a group of 400 school children are selected at random, what is the probability that at most 70 children will miss school because of asthma?
What is the probability that a worker chosen at random will have an age greater than or equal to 30 and less than or equal to 39?
The top motivation is for using a credit card. Can you conclude that there has been a chagne in the claimed or expected distribution? Use a =0.025.
One of the main measures of the quality of service provided by any organization is the speed with that responds to customer complaints. A large family-held department store selling furniture and flooring, including carpet, had undergone a chief ex..
a pharmaceutical company recieves large shipments of aspirin tablets. the acceptance smapling plan is to randomly
Suppose we want to conduct a poll to estimate the proportion of voters who approve of the current mayor, and we plan to use a 95% confidence interval for our estimate.
in constructing a confidence interval for a mean with unknown variance with a sample of 25 items bob used z instead of
According to a survey reported in the Business Week, 30% of adults in the U.S. said that the cell phone is the invention that they hate most but cannot live without.
an advocacy group is investigating whether gender has an effect on job category in large investment firms. given the
what is the relationship between sample size and the width of the confidence interval? please explain further as to
The distance travelled (in km) by a courier service motorcycle on 40 trips were recorded by the driver. Define the random variable and the data type.
Using a 5% level of significance, can we say that, generally there is important difference between satisfaction levels of mid country residents and coastal residents?
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