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 t ratio of 4.14 represent the greatest relative or standardized difference between the pretest and 3 months outcomes. Yes, it is significant because as indicated by the asterisk, p <0.05 is the least acceptable value for statistical significance.
Which of the following numbers, when rounded off to the nearest thousand, becomes 7 541 000? A 7 530 798 C 7 540 618 ( B 7 531 300 D 7 541 503 5. When 690 203 is broken down according to its digit values, it becomes A 690 000 + 20 + 3 B 690 000 + 200 + 3 C 600 000 + 9 000 + 200 + 3 D 600 000 + 90 000 + 200 + 3 ( 6. Which of the following numbers is the nearest to 1 million? A 989 799 C 1 000 100 ( B 997 899 D 1 100 000 7.
Adam Workman Lab, Week #1 Balance Lab Introduction The purpose of the Balance Lab experiment was to become familiar with the ChemLab software and to become familiar with different mass measurement methods. During the experiment, three different mass measurement methods were used to determine the mass of copper slugs as well as the mass of two different unknown weights: the direct weight method, the weighing by difference method, and the average mass method using both a centigram balance and an electronic balance. Using the centigram balance, the weight of a single copper slug, in grams, is determined using both the direct weight and weight by difference methods. Likewise, using the electronic balance, the same copper slug is measured by direct weight and weighing by difference methods. Using the same electronic balance, the average mass of five copper slugs, in grams, will be determined.
(Data are from Science 283 [February 26, 1999], p. 1296.) A) What is the probability that a randomly chosen sample of glass will break at less than 579 MPa? z(579) = (579-579)/14 = 0 P(x < 579) = P(z<0) = 0.5000 B) More than 590 MPa? z(590) = (590-579)/14= 11/14= 0.7857 P(x<500) = P(z< 0.7857) = 0.2160 C) Less Than 600 MPa?
None b. i only c. ii only d. i and ii e. ii and iii 5. For the positive integers a,b, and k, ak || b means that ak is a divisor of b, but ak+1 is not a divisor of b. If k is a positive integer and 2k || 72, then k is equal to p. 2 q. 3 r. 4 s. 8 t. 18 6. If p is the product of integers from 1 to 30, inclusive, what is the greatest integer k for which 3k is a factor of p?
A clustered index and many nonclustered indexes 4. A nonclustered index 5. Many nonclustered indexes 4. What are different types of Collation Sensitivity? 1.
a. 1200.0 b. 8.00 c. 22.76 x 10-3 d. 731.2204 Question 3 Which value has more significant figures? 2.63 x 10-6 or 0.0000026 Question 4 Express 4,610,000 in scientific notation. a. with 1 significant figure b. with 2 significant figures c. with 3 significant figures d. with 5 significant figures Question 5 Express 0.0003711 in scientific notation.
Draw a rectangle and shade of it. 25. Write 48 as the product of prime factors. 26. Find the least common multiple of 3, 4, and 6.
Analyzing Percent Iron(III) Composition of a Ferric Salt by Titration Discussion Part One: A titration is a volumetric technique in which a solution of known molarity and volume (a titrant) is added into a solution of unknown concentration but known volume (the analyte). The titrant, EDTA, was at a concentration of .02060 M and the analyte used was the ferric salt solution which was to be analyzed in order to determine its Fe(III) content. Percent composition was to be determined by performing a series of titrations. Five titrations were performed in order to obtain three which were close enough to each other to be deemed precise. The three endpoint values chosen were 15.84 mL, 15.91 mL, and 16.17 mL, leading to an average endpoint value 15.97 mL with a standard deviation of .17.
a they are zeros between nonzero numbers. b they are zeros to the right of the decimal point AND at the end of the number. c,d,g they are zeros to the left of a written decimal point and right of a nonzero number. e,f Number Significant Figures a 5.2357 5 b 5.0057 5 c 25.00 4 d 5.2350 5 e 500 1 f 500. 3 g 500.0 4 Examples Suppose you are presented with a problem where you need to calculate the area of a small rectangle.