To compare average birth weight between autistics and non-autistic school children from the same school district, the investigator will use.
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To compare average birth weight between autistics and non-autistic school children from the same school district, the investigator will use.
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- According to the National Center for Health Statistics, in the United States mothers who live in poverty generally have babies with lower birthweight than those who do not live in poverty. While the average birthweight for babies born in the U.S. is approximately 3300 grams, the average birthweight for women living in poverty is 2800 grams. A hospital introduced a prenatal care program to address this problem and enrolled 25 mothers who live in poverty. Babies born to these women had a mean birthweight of 3075g with a standard deviation of 500g. Is the program effective in improving the birthweight of babies born to poor mothers? Assume α = 0.05. Which mean do I use to create my null hypothesis and alternative hypothesis? is this a right-tailed test?I am in a graduate course of social science. I am really struggling with statistics. Thank you in advance. The volumnes of soda in quart soda bottles can be described by a normal model with a mu of 32.3 oz and a SD of 1.2 oz. What proportion of bottles can we expect to have a volumn less than 32 oz?Professor Gatis Skride is hired by the Weightlifting Federation of Jeekabpils to study the body weights of lifters. He begins by measuring the body weights of the 39 lifters in the the light heavyweight class, which covers 213 - 225 pounders. He finds that the mean weight of the lifters is 219.05 pounds, that the median weight is 219 pounds, and that the mode is 219 pounds. He finds that most of the lifters weigh 218 - 200 pounds, and roughly the same number of lifters is more than 219 pounds as is less than 219 pounds. Does he have a normal distribution? Why or why not?
- The American Academy of Pediatrics offers guidelines and recommendations for how much “screen time” (i.e., time in front of the television or other electronic devices) young children should have. One recommendation is that children between the ages of 2 and 5 years should have no more than two hours of screen time per day. What proportion of parents of young children follow these recommendations? To estimate this parameter, a pediatrician surveys 200 randomly selected parents of children between the ages of 2 and 5 years. The proportion of these parents who indicate they follow screen time recommendations for their children is 0.33. Use this information to construct a 99% confidence in order to estimate the population proportion of all parents of children between the ages of 2 and 5 years who follow screen time recommendations. As you construct the interval, round your margin of error to three decimal places as you are engaging in calculations, and choose the answer below that…please give me answer in relatableAnterior cruciate ligament (ACL) injuries occur most frequently in planting and cutting sports such as basketball, soccer, and volleyball. National collegiate athletic association injury data show that female athletes injure the ACL more frequently than their male counterparts do. A sports medicine professor wants to test this claim. He surveyed 5 universities that had both men's and woman's basketball, soccer, and volleyball and asked them how many grade 3 ACL tears they had during the past 5 seasons. Using the following results, are women at greater risk than men for ACL injuries? (use a standard deviation of 0.01, one tail test). Women- 4,3, 5, 2,4 Men- 2, 0, 1 ,2, 1 Calculate the sum of squares of injuries for women.
- After reading an article using research done by the Organization for Economic Co-operation and Development (OECD) based in France, a statistics student decided to conduct his own study to see if the figures in the article were accurate. This article stated that 37% of email users said spam has increased in their personal email accounts and 29% said it has increased in their work email accounts. To test the first figure, let p be the proportion of email users who feel that spam has increased in their personal email. The first set of hypotheses that the student wants to test is then: Ho: p = 0.37 Ha: p ≠ 0.37 Based upon the data collected by this student, a 95% confidence interval for p was found to be: (0.25, 0.32). At the 0.05 level of significance, which conclusion can be made? a. The student cannot reject Ho, since 0.37 does not fall within the limits of the interval. b. The student can reject Ho, since 0.37 falls within the limits of the interval.…The report "Who Borrows Most? Bachelor's Degree Recipients with High Levels of Student Debt"+ reported the following percentiles for amount of student debt for those graduating with a bachelor's degree in 2010. 10th percentile = $0 25th percentile = $0 50th percentile = $11,000 75th percentile = $24,600 90th percentile = $39,300 For each of these percentiles, interpret the value of the percentile. (Select all that apply.) 10th percentile At least 10% of students owe nothing. Less than 10% of students owe nothing. At most 10% of students owe nothing. 25th percentile O At least 25% of students owe nothing. Less than 25% of students owe nothing. At most 25% of students owe nothing. 50th percentile O 50% of the students owe $11,000 or less. O 50% of the students owe exactly $11,000. 50% of the students owe at least $11,000. 75th percentile 75% of the students owe $24,600 or less. 75% of the students owe exactly $24,600. O 75% of the students owe more than $24,600. 90th percentile 90% of…Find the test statistic for the problem?
- In 2016, the Honors College at a large state university claimed that the average GPA of its graduating students is 3.80. Later that year, a new service-learning requirement was added to the graduation requirements, despite student claims that this additional requirement would take away from the time devoted to their studies and likely lower their GPAs. Last month, the dean of the Honors College randomly selected 10 graduating students and recorded their GPAs. His recorded data is as follows: 3.85 3.95 4.00 3.61 3.83 3.73 3.69 3.81 3.73 3.78 Using the appropriate six-step non-parametric testing procedure, is there sufficient evidence at the α = 0.05 significance level to conclude that average GPA of graduating students has decreased since the service-learning requirement was added?An observational study is described. Identify the specified element.An examination of the medical records of 898 bodybuilders who died between 1995 and 2020 showed that those who had taken steroids had a higher risk of osteoporosis. Identify the parameter of interest.Social functioning is the ability for an individual to interact or adapt in a normal or usual way in social environments. Albert et al. (2007) asked if relatives of patients with OCD are as healthy as those in general healthy populations. They measured the social functioning of relatives using a 36-item survey with scores ranging from 0 (worst possible health) to 100 (best possible health). The mean score for the general healthy population was 77.43. Using the sample data, test whether there was a difference. Scores: 20, 60, 48, 92, 50, 82, 48, 90, 30, 68, 43, 54, 60, 62, 94, 67, 63, 85 State hypotheses 2. Set the criteria using α= 0.05 3. Calculate t 4. What should you conclude?
