Two technicians are discussing back pressure. technician a says that higher exhaust-system pressure leads to lower manifold vacuum. technician b says that back pressure can be tested with an oxygen sensor, and egr valve, or an air valve. who is correct?

a. technician a
b. both technicians a and b
c. neither technician a nor b
d. technician b

The average act score follows a normal distribution, with a mean of μ = 21.1 and a standard deviation of σ = 5.1. what is the probability that the mean iq score of 50 randomly selected people will be more than 23? 0 1 0.9958 0.3547 0.0042

The probability of committing a type i error is equal to which of the following? significance level, α type i error type ii error p-value alternative hypothesis

Two technicians are discussing oil changes. technician a says that waste oil and old filters need to be disposed of according to the law. technician b says that old filters can be returned to the parts department for a core value. which technician is correct?           a. technician a only   b. both technicians a and b   c. technician b only   d. neither technician a nor b