How much do you study?

 

46. How much do you study? A survey among freshmen at a certain university revealed that the number of hours spent studying the week before final exams was normally distributed with mean 25 and standard deviation 7.
c. Between what two values are the middle 80% of the hours spent studying?

20. Working two jobs: The Bureau of Labor Statistics reported in a recent year that 5% of employed adults in the United States held multiple jobs. A random sample of 75 employed adults is chosen.
b. A new sample of 350 employed adults is chosen. Find the probability that less than 6.5% of the individuals in this sample hold multiple jobs.

 

 

Section 4.2 #18 & Section 8.2 #16

18. Compute the least-squares regression line for predicting y from x given the following summary statistics:
x̄ = 8.1  sx = 1.2 ȳ = 30.4 sy = 1.9 r = −0.85

 

 

16. A sample of size n = 61 is drawn.
a. Find the critical value tα/2 needed to construct a 95% confidence interval.
b. If the sample size were n = 15, what additional assumption would need to be made for the confidence interval to be valid?

 

 

 

 

 

Sample Solution

 

 

 

 

 

Constructive outcomes of Faith

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inspirationSince the time logical revelations had demonstrated some strict authoritative opinions to be defective, humankind got separated in two inverse camps: adherents and skeptics. In spite of the fact that religion and following its authoritative opinions isn’t equivalent to the confidence in God, by greater part, individuals despite everything tend either to surrender to divine powers, or to clarify the condition of the Universe with the laws of nature, material science, or advancement; bargains are uncommon. Simultaneously, devotees (paying little mind to their admission) appear to be not quite the same as agnostics regarding the beneficial outcomes they experience due to having confidence in heavenliness.

Maybe one of the most significant and marvelous impacts of confidence in divine forces is that adherents show expanded life span, lower circulatory strain, and improved psychological wellness, contrasted with the individuals who have no confidence in God (Liberty Magazine). Specifically, as indicated by an across the country study held in the United States somewhere in the range of 1987 and 1995, adherents delighted in a normal of seven extra long periods of life; they likewise had less opportunities to have hypertension, and showed lower paces of misery and nervousness.

Confidence in holiness changes individuals’ disposition towards life all in all, themselves, and others. Specifically, devotees will in general be progressively idealistic; they regularly anticipate help from higher forces, and this invigorates them and plan to embrace life troubles with poise and perseverance (CAFSurveys). Therapists stress that such a methodology permits individuals to give less consideration to the negative sides of existence without disregarding them: fortunes and useful open doors are viewed as celestial assistance, though troubles and issues are confronted with perseverance and an expectation generally advantageous.

Being a devotee not just impacts a people’s wellbeing or mental prosperity, yet in addition their public activity. As indicated by an investigation directed by the Gray Matter Research group, when gotten some information about religion’s effect on the lessening of measures of wrongdoing and destitution in the public arena by and large, or the decrease in paces of savagery, 45, 41, and 39 percent of respondents separately thought religion positively affects these procedures as far as managing and limiting them (Gray Matter).

Confidence in godlikeness, paying little heed to a religion, can cause astounding constructive outcomes on its bearers. Despite what religion individuals have a place with, they experience similar advantages from having confidence. Specifically, adherents have longer lives, lower pulse, and lower paces of uneasiness and melancholy. They likewise will in general trust in the best even in confounded life circumstances, and face challenges with industriousness and positive thinking. Furthermore, religion has a regulative and limiting impact on such social wonders as savagery, wrongdoing, and destitution. Subsequently, being a devotee appears to give individuals with additional advantages without additional exertion.

References

Gow, Haven B. “Strict Faith Promotes Well-being.” Liberty Magazine. N.p., n.d. Web. 12 Mar. 2014. <http://www.libertymagazine.org/article/strict confidence advances well-being>.

“What Difference Does Christianity Make.” Gray Matter. N.p., n.d. Web. 12 Mar. 2014. <http://www.greymatterresearch.com/index_files/Impact.htm>.

“Demeanor is Everything.” CAFSurveys. N.p., n.d. Web. 12 Mar. 2014. <http://www.chrisasfakesurveys.org>.

 

 

 

 

 

 

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