Null hypothesis and research hypothesis: Do teens use cell phones to access the internet more than adults?
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- ruggling is normal and part of the process of learning. Describe an instance, so far in this course, where you struggled with a problem or concept, and initially had the wrong idea, but then later realized your error. In this instance, in what ways was a struggle or mistake valuable to your eventual understanding? You might also discuss whether struggling built aspects of character in you (e.g., endurance, self-confidence, competence to solve new problems) and how these virtues might benefit you in later ventures. Explain in a few sentences.what is the meaning of this equation? what does continuum hypothesis states?how do I do this problem? Please answer all part of the question and show all work and steps so I am able to easily understand it.
- Chapter 6, Section 3-CI, Exercise 145 Are Errors Less Likely with Electronic Prescriptions?Errors in medical prescriptions occur and a study1 examined whether electronic prescribing may help reduce errors. Two groups of doctors used written prescriptions and had similar error rates before the study. One group switched to e-prescriptions while the other continued to use written prescriptions, and error rates were measured one year later. The results are given in Table 1. Error No Error Total Electronic 254 3594 3848 Written 1478 2370 3848 Table 1 Are prescription error rates different? Find a 90% confidence interval for the difference in the two proportions, pw-pe, where pw is the proportion of errors using written prescriptions and pe is the proportion of errors using e-prescriptions.Round your answers to three decimal places.The 90% confidence interval is Enter your answer; The 90%confidence interval, value 1 to Enter your answer; The 90%confidence interval, value…81% of students say that they do not get enough sleepWhat connects both internal and external data in operations and supply chain analytics? Ai Danalytics Teradata Deep Learning.
- Chapter 6, Section 2-HT, Exercise 128 - MathPad Are Florida Lakes Acidic or Alkaline?The pH of a liquid is a measure of its acidity or alkalinity. Pure water has a pH of 7, which is neutral. Solutions with a pH less than 7 are acidic while solutions with a pH greater than 7 are basic, or alkaline. The dataset FloridaLakes gives information, including pH values, for a sample of lakes in Florida. Computer output of descriptive statistics for the pH variable is shown: Descriptive Statistics: pH Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3 Maximum pH 53 0 6.591 0.177 1.288 3.600 5.800 6.800 7.450 9.100 Click here for the dataset associated with this question. (a) How many lakes are included in the dataset? What is the mean pH value? What is the standard deviation?Enter the exact answers.n= Enter your answer in accordance to item (a) of the question statementx¯= Enter your answer in accordance to item (a) of the question…1 (part 2). Does When Food Is Eaten Affect Weight Gain?A study was introduced that examined the effect of light at night on weight gain in mice. In the full study of 27 mice over a four-week period, the mice who had a light on at night gained significantly more weight than the mice with darkness at night, despite eating the same number of calories and exercising the same amount. Researchers noticed that the mice with light at night ate a greater percentage of their calories during the day (when mice are supposed to be sleeping). The computer output shown below allows us to examine the relationship between percent of calories eaten during the day, DayPct, and body mass gain in grams, BMGain. A scatterplot with regression line is also shown below (attached image).Pearson correlation of BMGain and DayPct =0.740P-Value =0.000--------------------------------------------------------------The regression equation isBMGain=1.11+0.127DayPct Predictor Coef SE Coef T P Constant 1.113 1.382…en 000 Pursuing an MBA is a major personal investment. Tuition and expenses associated with business school programs are costly, but the high costs come with hopes of career advancement and high salaries. A prospective MBA student would like to examine the factors that impact starting salary upon graduation and decides to develop a model that uses program per-year tuition as a predictor of starting salary. Data were collected for 37 full-time MBA programs offered at private universities. The data are stored in the accompanying table. Complete parts (a) through (e) below. E Click the icon to view the data on program per-year tuition and mean starting salary. a. Construct a scatter plot. Choose the correct graph below. OA. O B. В. OC. OD. O D. Q 80,000- 80,000- TOLL 200,000- 200,000- 0- 0+ 04 200,000 Starting Salary (S) 80,000 200,000 Starting Salary (S) 80,000 Tuition ($) Tuition ($) b. Assuming a linear relationship, use the least-squares method to determine the regression coefficients…
- Please send me answer within 10 min!! I will rate you good for sure!! Please solve all parts and provide explanation for your solution! According to a survey conducted by Deloitte in 2017, 0.46 of U.S. smartphone owners have made an effort to limit their phone use in the past. In a sample of 80 randomly selected U.S. smartphone owners, approximately __________ owners, give or take __________, will have attempted to limit their cell phone use in the past. Assume each pick is independent. 1) 80 , 4.458 2) 36.8 , 4.458 3) 4.458 , 36.8 4) 36.8 , 19.90 5) 36.8 , 0.46Please circle your answers. Thank you in advanced!Early life corresponds to the first bacterial colonization of the digestive tract, creating a microbiome thought to play an important role in human development. What might be the effect of early exposure to antibiotics on children's development? One study followed 11,532 full-term babies all born in the county of Avon, United Kingdom, during 1991 and 1992. Exposures to antibiotics during infancy were recorded, along with measures of body mass at regular intervals over several years. The researchers found that antibiotic exposure during the first six months of life was associated with increased body mass later in childhood.
