Reactivate04.3. The following data are derived from the Monthly Vital Statistics Report issued by the NationalCenter for Health Statistics in October 1999.Suppose that infants are classified as low birthweight if they have a birthweight less than 2500 gand as normal birthweight if they have a birthweight greater than or equal to 2500 g. Supposethat infants are also classified by length of gestation in the following five categories: less than 28weeks, 28-31 weeks, 32-35 weeks, 36 weeks, and more than 36 weeks. Assume theprobabilities of the different periods of gestation are as given in the accompanying table.Length of gestationLess than 28 weeksProbability0.00728-31 weeks0.01232-35 weeks0.05036 weeks0.038More than 36 weeks0.893Table 3. Distribution of length of gestationAlso, assume that the probability of low birthweight is 0.949 given a gestation of less than 28weeks, 0.702 given a gestation of 28 - 31 weeks, 0.434 given a gestation of 32 - 35 weeks,0.201 given a gestation of 36 weeks, and 0.029 given a gestation of more than 36 weeks.What is the total probability of having a low birthweight infant?

Probability of an event is the chances of occurrence of the event and its value lies between 0 and…

Answered: 3. The following data are derived from…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Advertising aimed at teenagers tends to contain dance-beat music, adventure, and a fast pace rather than words. To test to see how teenagers respond to different types of commercials, 150 teenagers then watched a set of commercials with dance-beat music, adventure, and a fast pace. After the commercials, the teenagers were asked whether they would want to buy the product and 102 responded that they would buy the product. Another sample of 125 teenagers where shown a set of commercialscomprised primarily of words. After the commercials, the teenagers were asked whether they would buy the product and 60 responded that they would like to buy the product. Based on both samples, at the 5% level of significance, test the hypothesis that there is at least a 10% difference in the proportion of teenagers who would buy the product after watching the different types of commercials?
1. EA Sports is interested in how much money, on average, their customers spend on in- game items. Using their records, they draw a sample of 10,000 customers and calculate each customer's average spending on in-game items. B. What kind of data is "amount of money spent on in-game items per customer"? qualitative Explain quantitative-continuous quantitative-discrete
Classify each of the following as nominal, ordinal, interval, or ratio data (adapted from [Black 2012]). a. The time required to produce each tire on an assembly line b. The number of quarts of milk a family drinks in a month c. The ranking of four machines in your plant that have been designated as excellent, good, satisfactory, and poor d. The telephone area code of clients in the US e. The age of each of your employees f. The dollar sales at the local pizza shop each month g. An employee's identification number h. The response time of an emergency unit
5. What are the values of the five-number summary for the following data set in order from least to greatest? 1077, 1063, 1112, 1123, 1044, 1041, 1087, 1045, 1097, 1001, 1064, 1101, 1018, 1073, 1114 1001, 1044, 1073, 1101, 1123 1001, 1041, 1064, 1077, 1123 1018, 1045, 1077, 1112, 1114 O 1001, 1042.5, 1073, 1106.5, 1123
11. If the temperatures of various cities are recorded for a year, what would the measures of spread tell you about the weather?
130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 18 0.1385 18 1 21 0.1615 39 2 20 59 3 15 0.1154 4 16 0.1231 90 10 0.0769 100 6 0.1231 116 7 14 0.1077 130 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week?
3. Classify the following variables by checking the appropriate column Numerical Categorical Dichotomous Polychotomous Variables Continuous Discrete Ordinal Nominal 1.Sex 2.Emotional Intelligence 3.Honor rolls 4.Length 5.Spiritual practices 6.Level of addiction 7.Absences 8.Values 9.Mortality rate 10.Degree of agreement
110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week 0 1 2 3 4 5 6 7 Frequency 7 16 12 13 Relative Frequency 0.0636 0.1455 0.1091 0.1182 14 22 16 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 1 time per week? 0.1273 0.2 0.1455 Cumulative Frequency % 7 23 35 48 72 94 110
Does buttered toast fall face down? Data was collected to test this. 40 slices of toast (each with butter on one side) were dropped (from the same height). 24 slices (60%) landed buttered side down. We would like to use the results of this study to determine if there is statistical evidence that toast tends to land buttered side down more than 50% of the time.

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