1.PERCENT ● DEFINITION OF PERCENT - Percent means parts per 100 The symbol is % Example: 25% means 25 per 100 ● CONVERSION TECHNIQUES - ✔Changing percent to decimal Change a percent to a decimal. Move the decimal point two places to the left. In a percent‚ the decimal point would come at the end of the last number (for 75%‚ envision that it looks like 75.) Examples: 75% converts to .75 40% converts to .40 3.1% converts to .031 ✔Changing decimal or whole number to percent Change a decimal
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Sohal‚ S 04/05/11 (HLT-362 V) Applied Statistics for Healthcare Professionals Exercise 18 Q1. Assuming that the distribution is normal for weight relative to the ideal and 99% of the male participants scored between ( - 53.68‚ 64.64)‚where did 95% of the values for weight relative to the ideal lie? Round your answer to two decimal places. Answer: Mean of weight relative to ideal = 5.48 and Standard Deviation (σ) = 22.93. Calculation: (x bar) 1.96(σ) 5.48± 1.96(22.93) 5.48 - 1.96(22.93)
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EXERCISE 29 t-TEST FOR INDEPENDENT GROUPS I STATISTICAL TECHNIQUE IN REVIEW The t-test is a parametric analysis technique used to determine significant differences between the scores obtained from two groups. The t-test uses the standard deviation to estimate the standard error of the sampling distribution and examines the differences between the means of the two groups. Since the t-test is considered fairly easy to calculate‚ researchers often use it in determining differences between two groups
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1. A line passes through the points (–3‚ –3) and (–1‚ 3). What is the slope of the line that passes through the two points? Hint X -3 -1/3 3 1/3 2. A line passes through the points (3‚ –4) and (7‚ 12). What is the y-intercept of the line? Hint X (0‚ 4) (4‚ 0) (0‚ –16) (–16‚ 0) 3. Consider the following system of equations. y = 8x - 8 y - 8x = 7 What can you conclude about the system of equations? Hint X The system of equations is inconsistent. The system
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Lesson 1-8 2. 16 4. 17 Lesson 1-9 5.A. 5463 divided by 9= 607. Multiply 607 by 9 to check your answer. B. 6.00-3.98= 2.02 C. 5.70x0.03= .1710 I moved the decimal over 4 places. D. 4 1/2 divided by 6= 9/12 or ¾. E. 18 1/5-12 2/3= 5 8/15 I found a common denominator. F. 25.75+40.00= 65.75 G. 546.30 divided by .09 move the decimal over two to the right and you get 6070 as your answer. H. 6 divided by 4 ½ flip the second fraction and you get 1 1/3 as the answer. I. 13 7/8+6 1/3 find a common denom
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Name: ____________ Date: ______________________________________________________________________________ □ EXERCISE 31 1. What are the two groups whose results are reflected by the t ratios in Tables 2 and 3? The two groups with results on the effects on cardiovascular risk factors and the programs effective on health behavior have paid t-ratios 2. Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest
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G036 * Yes because the p-value is less than 0.05 or No‚ because the p-value is greater than 0.05 * The coefficient of variation is the standard deviation of a data set‚ divided by the mean of the same data set. * Z score = x -ms * The Independent part is what you‚ the experimenter‚ changes or enacts in order to do your experiment. The dependent variable is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable
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GMB 713 PROBLEM SET NO. 2 PROBLEM SOLVING: Solve the following problems. Show all pertinent solutions. 1. A car battery dealer is trying to determine which of the brands of car battery he is selling has a longer life span. He conducted an investigation by interview his customers and was able to get the following results: Brand X Brand Y Mean life span 4.5 years 4.9 years Standard deviation
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Prepare a managerial report for the dean of the college that summarizes your assessment of the nature of cheating by business students at Bayview University. Be sure to include the following questions. 1. Develop 95% confidence intervals for the proportion of all students‚ the proportion of male students‚ and the proportion of female students who were involved in some type of cheating. 2. Conduct a hypothesis test to determine if the proportion of business students at Bayview University who were
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Elementary School and Middle School ENG 121 Prof. Melody Debonnel September 2012 Elementary School and Middle School Transitioning from elementary school to middle school is something we all have or had to do! Most kids cringe at the thought of making this huge step in life. For many students this transition can be a time of mixed emotions. Having been through this experience‚ I will compare and contrast the two‚ hoping that this will give you a clear picture of elementary and middle school
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