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Wells Fargo Bank, based in San Francisco, offered the option of applying for a loan over the Internet.
If a random sample of 200 test runs of the service reveal an average of 8 minutes to fill in the electronic application and standard deviation =3 minutes, construct a 75% confidence interval for µ.
On May 23, 2013, Gallup reported that of the 1,005 people surveyed, 76% of U.S. workers believe that they will continue working past retirement age. The confidence level for this study was reported at 95% with a 3% margin of error. a. Determine th..
what stats test would i run for this rq and hq1 how does the cultural typology of nursing programs correlate with
All the customers who entered a store on a particular day were given a surgery to fill out concerning their opinions of the service at the store? What type of sample is this? I can't decide between voluntary response or convience.
The experiment data in below table was to evaluate the effects of three variables on invoice errors for a company. Invoice errors had been a major contributor to lengthening the time that customers took to pay their invoices and increasing the acc..
1. in clinical trials a certain drug has an 8 success rate of curing a known disease. if 8 people are known to have the
Researchers studying infant head circumferences (in centimeters) wish to test if the mean head circumference differs from the historical mean of 34.5 cm. The researchers obtain a sample of 17 infants with a mean head circumference of 34.16 cm and a s..
wasserman 1989 studied a process for the manufacturing of steel bolts. historically these bolts have a mean thickness
Standard deviation is $0.10. At α = 0.01, is there significant difference in price? Determine the 99% confidence interval of the difference in the means.
what is minimum sample size required to estimate a mean within 2 with 95 confidence if the sample standard deviation is
Jack in the Box offers hamburgers, turkey burgers, and chicken. They also offer two kinds of drinks Pepsi and ice tea and two flavors of ice cream vanilla and strawberry. What is the probability of a customer ordering chicken, an ice tea and strawb..
Mean 52 and standard deviation 7; N(52, 7). According to the 68-95-99.7 rule, what percentage of jazz CDs play between 38 and 59 minutes?
regression method were used to analyze the data n=20 from a study investigating the relationship between roadway surface temperature (x) and pavement (y).
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