### Study on Birthweight and Maternal Smoking HabitsThe mean birthweight of an infant is hypothesized to be associated with the smoking status of the mother during the first trimester of pregnancy. The following data presents mothers divided into four categories based on smoking habits and the corresponding birthweights of their children.#### Categories and Data:**Group 1: Non-smoker (NONE)**- Birthweights: 7.5, 6.2, 6.9, 7.4, 9.2, 8.3, 7.6**Group 2: Ex-smoker (EX)**- Birthweights: 5.8, 7.3, 8.2, 7.1, 7.8**Group 3: Current smoker, < 1 pack per day (CUR < 1)**- Birthweights: 5.9, 6.2, 5.8, 4.7, 8.3, 7.2, 6.2**Group 4: Current smoker, ≥ 1 pack per day (CUR ≥ 1)**- Birthweights: 6.2, 6.8, 5.7, 4.9, 6.2, 7.1, 5.8, 5.4#### Statistical Test:Using statistical analysis software (Stata), conduct a test to determine if the mean birthweights are equal across all four groups at a significance level of alpha = 0.05.#### Question:What is the corresponding p-value?- 0.0284- 0.0137- 0.05- 0.737This setup allows readers to understand the influence of smoking on birthweights while choosing the p-value that could affect the hypothesis result.

Answered: nean lated with the oking status of the…

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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The accompanying table contains historical data on staff salaries (in dollars per pupil) for 30 schools sampled in part of a country in the early 1970s. I need help with this part attached. 3.86 2.80 2.71 2.95 3.08 1.802.60 3.32 2.52 2.12 2.58 2.682.76 2.85 3.67 3.84 3.43 2.122.94 2.83 3.04 2.43 2.18 3.693.21 3.67 2.39 2.61 3.42 3.45 The sample mean is 2.9183 The sample standard deviation is 0.5495
The following data represents the body temperature in degrees Fahrenheit of randomly selected adults: 98, 99.2, 98.6, 98.2, 98.6, 98.5, 98.4, 98.1, 99.1, 99, 98.698, 99.2, 98.6, 98.2, 98.6, 98.5, 98.4, 98.1, 99.1, 99, 98.6 Use Excel to compute the values indicated below. Express your answers rounded to the nearest tenth. Mean: Standard Deviation: Use the 68-95-99.7 Rule to answer the following question.What is the probability of a body temperature less than 99.8 ? Express your answer rounded to four decimal places.
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The coefficient of varlation for the following data is 60, 47, 75, 85, 58 O A. 23.50% O B. 24.05% O C. 25.23% O D. 23.05%
In a study conducted by some Statistics students, 71 people were randomly assigned to listen to rap music, music by Mozart, or no music while attempting to memorize objects pictured on a page. They were then asked to list all the objects they could remember. The summary statistics for each group are shown in the table. Complete parts a and b. Rap 23 Mozart No Music Count Mean SD 31 17 11.61 8.04 13.92 4.84 4.48 3.32 Let group M correspond to Mozart listeners and group R correspond to rap listeners. Write the null and alternative hypotheses. Choose the correct answer below. O A Ho Hu - He =0 HA: HM- HR#0 B. Ho: HM-HR =0 HA HM HR 0 OC. Ho Hu- HR
A local park district is planning to build a recreation center. The park district conducted a poll to find out the types of physical activities the local population would be interested in. The poll was based on telephone responses from 1013 randomly selected adults. The table shows the percentages of people who expressed interest in various activities. Is it reasonable to conclude that 62% expressed interest in either biking or aerobics? A. Yes, because the percentages can always be added in relative frequency tables. B. No, because the poll is not based on a large-enough number of individuals. C. Yes, because these categories do not overlap. D. No, because these categories overlap. E. No, because the percentages in relative frequencies tables can never be added.
The data given below were taken from a study about preferred drinks according to age. The table below indicates the numbers of people in the study according to their age (18-24, 25-45, 46+) and their preferred drinks (Hot Drinks, Milk Shakes, Soft Drinks). Hot Drinks Milk Shakes Soft Drinks 18 – 24 10 60 90 25 – 45 20 20 3p 46+ 40 10 20 Among the people in the age class "18 - 24", what is the percentage of people who prefer "Hot Drinks"? Select one: O a. 6.25 % O b. 22.22 % O c. 28.57 % O d. 14.29 %
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Age and Gender. The U.S. Census Bureau publishes census data on the resident population of the United States in Current Population Survey. According to that document, 7.3% of male residents are in the age group 20–24 years. a. If no association exists between age group and gender, what percentage of the resident population would be in the age group 20–24 years? Explain your answer.b. If no association exists between age group and gender, what percentage of female residents would be in the age group 20–24 years? Explain your answer.c. There are about 158 million female residents of the United States. If no association exists between age group and gender, how many female residents would there be in the age group 20–24 years?d. In fact, there are some 10.9 million female residents in the age group 20–24 years. Given this number and your answer to part (c), what do you conclude?

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