The weekly sales at two movie theaters were recorded for a random sample of 25 weeks. A 95 percent confidence interval for the difference in mean weekly sales for the two movie the.

With all else remaining constant, which of the following would have resulted in a confidence interval narrower than the calculated interval?

A) A sample size less than 25

B) A sample size greater than 25

C) An increase to 99 percent confidence

D) A sample mean greater than $1,937

E) A sample mean less than $1,937

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

30005

yes ok                                            

the answer to 1/4x+5/3x-4=2-1/12x is x=3

hope this if needed hmu