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The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed. If the standard deviation is $4.58, find the probability that a randomly selected employee earns less than $5.43.
a) 0.313 = 31.3%
b) 0.168 = 16.8%
c) 0.436 = 43.6%
d) 0.345 = 34.5%
To determine if this is evidence that students perform worse under uncomfortable conditions, The P-value of a test
Drug sniffing dogs must be 95% accurate. A new dog is being tested and is right in 46 of 50 trials. Find a 95% confidence interval for the proportion of times the dog will be correct.
Given the following data on hotel check-ins for a 6-month period:
Based on these results, the proportion of the variation in 1993 winnings that is explained by the average number of putts per round and driving distance
Compute the probability that debt for a randomly selected borrower with good credit is more than $18,000?
Find out the operating characteristics for this system.
A sample of 64 Atlanta consumers showed a mean quarterly water bill of $51 with a sample standard deviation of $12. At α = .05, does the Atlanta sample support the conclusion that above-average rates exist for this private water system?
How large should n be so that a 90% confidence interval for µ has a margin of error and What is the P-value for a test of the hypotheses
Makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the "reference" drug it is intended to imitate.
A recent census of a small town in Michigan showed that 60% of the residents are male, 20% have college degrees, and 15% are both male and college graduates.
The researchers planned to use simple linear regression to see if the age at which a baby was first able to crawl could be predicted from the average outdoor temperature six months after each baby's birthdate.
Compute the range and interquartile range
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