i need these math question done in 2 hrs
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question -8
Four types of explanation for each graph in one page.
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7 PG Literature Review Math ED + Literature review -Summaries
need it tomorrow 12 noon- Writing 7 PG Literature Review- Literature review -Summaries complete in the same file i uploaded- I need 25 – references I completed 7 – need more 18- there is a guidelines
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Statistics Mid Term
Part 1 of 9 -Question 1 of 251.0 PointsWhich of the following statements is true for the following data values: 7, 5, 6, 4, 7, 8, and 12?Reset SelectionPart 2 of 9 -Question 2 of 251.0 PointsIf A and B are mutually exclusive events with P(A) = 0.70, then P(B):Reset SelectionQuestion 3 of 251.0 PointsThe formal way to revise probabilities based on new information is to use:Reset SelectionPart 3 of 9 -Question 4 of 251.0 PointsThe following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months.x012345P (X=x)0.200.250.200.150.100.10Find P( X 3)Reset SelectionQuestion 5 of 251.0 PointsThe following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months.x012345P (X=x)0.200.250.200.150.100.10Find P( X 5)Reset SelectionQuestion 6 of 251.0 PointsA discrete probability distribution:Reset SelectionPart 4 of 9 -Question 7 of 251.0 PointsOne reason for standardizing random variables is to measure variables with:Reset SelectionQuestion 8 of 251.0 PointsThe standard deviation of a probability distribution is a:Reset SelectionQuestion 9 of 251.0 PointsThe theorem that states that the sampling distribution of the sample mean is approximately normal when the sample size n is reasonably large is known as the:Reset SelectionQuestion 10 of 251.0 PointsGiven that Z is a standard normal random variable, P(-1.0 < Z < 1.5) isReset SelectionQuestion 11 of 251.0 PointsIf Z is a standard normal random variable, the area between z = 0.0 and z =1.30 is 0.4032, while the area between z = 0.0 and z = 1.50 is 0.4332. What is the area between z = -1.30 and z = 1.50?Reset SelectionQuestion 12 of 251.0 PointsThe continuous distribution characterized by a symmetric, bell-shaped curve is the:Reset SelectionPart 5 of 9 -Question 13 of 251.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker.Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.The following data are the base salaries, in thousands of dollars, of 50 chief executive officers for a sample of companies doing business with the state of Connecticut. That is, the first entry in the table below corresponds to a salary of $125,000. A copy of this data set can be found in the Excel Workbook called CEOSalaries.xls.125157113127201165145119148158148168117105136136125148108178179191225204104205197119209157209205221178247235217222224187265148165228239245152148115150Find the interquartile range of the CEO salaries, in thousands of dollars, rounded to 2 decimal places. Do not use a dollar sign. Note: $177,760 should be recorded as 177.76.Reset SelectionQuestion 25 of 251.0 PointsUsing the standard normal curve, the Z- score representing the 85th percentile is 0.67Reset Selection
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Homework assignment
Please see the attached. I need a completion that is original (not a copy). Please forward a quote, thank you so much!
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Stats Class HW
3 problems with a combined total of 7 questions. Show work please. Its an AP High School Stats class
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The air in a room with volume 180 m3 contains 0.1% carbon dioxide initially. Fresher air with only 0.05% carbon dioxide flows into the room at a rate of 2 m3/min and the mixed air flows out at the same rate.
The air in a room with volume 180 m3 contains 0.1% carbon dioxide initially. Fresher air with only 0.05% carbon dioxide flows into the room at a rate of 2 m3/min and the mixed air flows out at the same rate.Find the percentage of carbon dioxide in the room as a function of time t (in minutes).p(t) =1What happens with the percentage of carbon dioxide in the room in the long run?lim t → ∞ p(t) = 2[removed] %
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final quiz-4
Answer the following questions covering materials from previous chapters in your textbook. Each question is worth 2.5 points.1. A sample of 49 sudden infant death syndrome (SIDS) cases had a mean birth weight of 2998 g. Based on other births in the county, we will assume σ = 800 g. Calculate the 95% confidence interval for the mean birth weight of SIDS cases in the county. Interpret your results.2. A vaccine manufacturer analyzes a batch of product to check its titer. Immunologic analyses are imperfect, and repeated measurements on the same batch are expected to yield slightly different titers. Assume titer measurements vary according to a normal distribution with mean µ and σ = 0.070. Three measurements demonstrate titers of 7.40, 7.36 and 7.45. Calculate a 95% confidence interval for true concentration of the sample.3. True or false? A confidence interval for µ is 13 + 5.a. The value 5 in this expression is the estimate’s standard error.b. The value 13 in this expression is the estimate’s margin of error.c. The value 5 in this expression is the estimate’s margin of error.4. The term critical value is often used to refer to the value of a test statistic that determines statistical significance at some fixed α level for a test. For example, +1.96 are the critical values for a two-tailed z-test at α = 0.05. In performing a t-test based on 21 observations, what are the critical values for a one-tailed test when α = 0.05? That is, what values of the tstat will give a one-sided p-value that is less than or equal to 0.05? What are the critical values for a two-tailed test at α = 0.05?5. When do you use a t-procedure instead of a z-procedure to help infer a mean?6. A simple random sample of n = 26 boys between the ages of 13 and 14 has a mean height of 63.8 inches with a standard deviation 3.1 inches. Calculate a 95% confidence interval for the mean height of the population.7. Identify whether the studies described here are based on (1) single samples, (2) paired samples, or (3) independent samples.a. An investigator compares vaccination histories in 30 autistic schoolchildren to a simple random sample of non-autistic children from the same school district.b. Cardiovascular disease risk factors are compared in husbands and wives.c. A nutritional exam in applied to a random sample of individuals. Results are compared to expected means and proportions.8. We wish to detect a mean difference of 0.25 for a variable that has a standard deviation of 0.67. How large a sample is needed to detect the mean differences with 90% power at α = 0.05 (two-sided)?9. Identify two graphical methods that can be used to compare quantitative data from two independent groups.10. A questionnaire measures an index of risk-taking behavior in respondents. Scores are standardized so that 100 represents the population average. The questionnaire is applied to a sample of teenage boys and girls. The data for boys is {72, 73, 86, 95, 95, 95, 96, 97, 99, 125}. The data for girls is {89, 92, 93, 98, 105, 106, 110, 126, 127, 130}. Explore the group differences with side-by-side boxplots.
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Search Algorithms
Read carefully what should be done. Attached document
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Please A+..
Please kindly give me A+. Answer the papers separately. You will see that there is Paper 5 Assignment and Paper 8 Assignmemt. Answer them separately on different papers. Use Word format please.Thank you!
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