The first ____ milkings from fresh cows are considered colostrum for marketing and cannot be sold
a. 3 c. 9
b. 6 d. 12
B
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Probability of Error for complementary signals as function of ?N. The following worksheet specifies a 10-sample binary data signal s1 in B4:B13. A random transmitted bit Dt is computed in B1. The transmitted signal sTi (in C4:C13) = si if Dt=1 and =-si if Dt=0. The Gaussian noise sequence Ni SD ?N is specified in F1. The detected signal Xi is computed in E4:E13. The matched processor component siXi is computed in F4:F13, and the matched processor output V is computed in F15. The detected bit Dr is computed in D1.
The probability of error is estimated by computing the ratio of errors to transmitted data in I5 as
the noise ?N varies from 0 to 14?? in steps of ?? specified in I1. The total number of data bits to
be transmitted nT is specified in I2. The number of transmissions accomplished in shown in I3
and the number of errors in I4. Three VBA Macros are present:
? ResetCS resets the counts in I3 and I4.
? XmitCS increments the number of transmissions and, if an error occurs, increments the
error count.
? AutoCS computes the P[error] for nT transmissions as ?N varies and displays the results in
H8:I15.
a. What is the formula that computes Dt
in B1?
b. What is the formula that computes the transmitted signal sT2 in C6?
c. What is the formula that computes the noise component N2 in D6?
d. What is the formula that computes the detected signal X2 in E6?
e. What is the formula that computes the processor component s2X2 in F6?
f. What is the formula that computes the processor output V in F15?
g. What is the formula that computes Dr
in D1?
h. What is the formula that computes P[error] in I6 that produces 0 for #mits = 0?
i. Compose ResetCS.
j. Compose XmitCS.
k. Compose AutoCS.
Generating sinusoidal signal in noise and computing SNR. The following worksheet specifies a 15- sample sinusoidal signal s1 having one period with amplitude specified in A2. The noise Ni variance ?N 2 is specified in B2.
a. What is the formula that computes the signal s1 in B6?
b. What is the formula that computes the noise N1 in C6?
c. What is the formula that computes the observed signal X1 in D6?
d. What is the formula that computes the signal energy Es
in G5?
e. What is the formula that computes the SNR in G7?
f. What is the formula that computes the SNR in dB in G9?
Mr. Ford brought 9 cows averaging 1,315 pounds, 12 steers averaging 565 pounds, and 15 heifers averaging 535 pounds to the Boyd County Livestock Market. The cows sold for $920 per head, the steers for $140 per 100 pounds (cwt), and the heifers for $120 per cwt. The selling expenses are shown in Table 17-1. What did the livestock market pay Mr. Ford for the cattle?
We meet a very large part of our energy needs with _____
A) renewable resources B) wind power C) water power D) fossil fuels