The women’s 500m speed skating event is scored as an average of two attempts at the distance. the quickest total score wins. in sochi the mean speed for the total speed across both races was 77.4 seconds, with a standard deviation of 1.3 seconds. what speeds represent the middle 50% of this distribution? choose the z-score closest to the percentage you are looking for if the exact percentage is not available. 76.5 to 78.3 seconds. -.67 to .67 seconds. 76.1 to 78.7 seconds. 77.4 to 78.7 seconds.

  76.5 to 78.3 seconds

Step-by-step explanation:

The output of a suitable calculator is attached.

h df tyjgtyj ttd y ytkgfty ty

step-by-step explanation:

tyty jry j y yj yttj yhgtyj y ghyj ytthj

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: