If you choose 40 random employees from the corporation, the standard error would equal 6/Square root of 40 = .95 days. The 12 days in this department corresponds to (12-8.2)/.95 = 4 standard errors above the corporation average of 8.2. This is much higher than two or three standard errors, and it appears to be beyond chance variation. Chapter 9 Exercise 3 The p- value tells you how likely it would be to get results at least as extreme as this if there was no difference in the taste and only chance variation was operating. In this problem, p-value of 0.02 means that, if there is no difference in taste, then there is only 2% chance that 70% or more people would declare one drink better than the
2. Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is this t ratio statistically significant? Provide a rationale for your answer. The total risk score is 4.14, the greatest relative or standardized difference between pretest and 3 month outcomes.
Can be used to represent one character in the lowercase English alphabet c. Represents one binary digit d. Represents four binary digits 2. Which of the following terms means approximately 106 bytes? a. Terabyte b. Megabyte c. Gigabyte d. Kilobyte 3. Which answer lists the correct number of bits associated with each term? a.
Which of the following terms means approximately 1060 bytes? D. Kilobyte. 3. Which answer lists the correct number of bits associated with each term? D. 64 bits per quadruple word.
Carry it over to the right. 32 is less than 63 so you will subtract and put a 1 for that value, and continue down the line. 2. Explain why the values 102 and 00102 are the same. Because when you plug the binary numbers into the 8 bit conversion table, the two zeros before the 10 equal nothing.
Match each with the expression or equation which best describes it. Potential Matches: 1: a + b = b + a 2: (a + b) + c = a + (b + c) 3: a(b + c) = ab + ac 4: This expression has 4 of them: 3a + b – 5 + 8d. 5: This is what the 5 in the term 5xy is called. Answers: ___: Term ___: Coefficient ___: Associative Property ___: Distributive
100 000 times c. 1/10 times [pic] d. 100 times 10. Why are three circles needed to determine the epicenter, as shown in the figure? [pic] [pic] a. If only two circles are used, there are two possible locations. b.
.. ... .... .. .. (b) Expand and simplify (x + 3)(x + 7) (2) .................................................. .. ... .... .. .. (c) Factorise fully 3pq – 12p2 (2) .................................................. .. ... .... .. .. (d) (i) Factorise 3 y 2 − 10 y + 3 (4) .................................................. .. ... .... .. .. Hence, or otherwise (ii) Factorise 3( x + 2) 2 − 10( x + 2) + 3 .................................................. .. ... .... .. .. (Total for Question 9 = 11 marks) Edexcel GCSE in Mathematics A Sample Assessment Materials Issue 2 © Edexcel Limited 2010 57 10 1 2 3 98 99 100 The diagram represents 100 cards. Each card has a whole number from 1 to 100 on it. No cards have the same number. Bill puts a red dot on every card which has a multiple of 6 on it.
328.0 grams o C. 439.0 grams o D. 48000 grams 4. 4. Based on the image, what can you infer about the mass of the object being measured? o A. The mass is exactly 255.0 grams.
Problem #35 • This sequence is arithmetic • The cost to build the tower is $1800. STEPS/CALCULTATIONS YOU PERFORMED TO REACH THE ANSWER: The common difference in this sequence is $25, thus making it an arithmetic sequence. The formula for finding the final term is an = a1 + (n-1)d. In this problem, n=9 for the 9 sections of 10 foot sections, a1=100 since that is the first term of the sequence, and d=25 for the common difference. An = a1 + (n-1)d A9 = 100 + (9-1)25 A9 = 100 + (8)25 A9 = 100 + 200 A9 = 300 So the final term of the sequence is 300. Now that we know this, we can find the sum of the terms to calculate the final cost.