Geoff is the proud owner of a restaurant. recently he read an article in food weekly which stated that the population mean preparation time for food at popular restaurants is equal to 21 minutes. a footnote at the bottom of the article said that the population standard deviation of preparation times was equal to 7 minutes. geoff is interested in determining whether his restaurant has the same average preparation time as the popular restaurants described in the magazine article. geoff timed how long it took to prepare 33 randomly selected meals over a week. the mean preparation time for the sample was calculated as 19 minutes. geoff would like to use his sample to construct a hypothesis test with h0: μ = 21 and ha: μ ≠ 21.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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rauschg

rauschg · hand

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step-by-step explanation:

i need points

step-by-step explanation:

sorry bubs

b

step-by-step explanation:

whole number data type

step-by-step explanation:

as whole number type represents whole number

like 1, 2 ,3, 4

in other words the whole numbers are those numbers which cannot be written infraction.

since we can take days as a whole number i.e 1 day 2 day and we cannot write 1.2 day hence we will use whole number data type