Question 10: I invested the same amount, $100 in each of 50 stock picks. The average amount I made was $110, and the standard deviation of the amount I made was 45. Test the null hypothesis that I have no skill: i.e., the population mean of the amount I made back was $100. Make sure to state your conclusion about whether I have skill or not.

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A: Given that,  The proportion us p= 77% = 0.77 And sample size is n= 110 So X~ Binomial (110,0.77)

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A: The dietician is working with a random sample of 50 patients who are dieting.

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A: answer is explained below-

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Q: A law school finds the following relationship between LSAT scores and first-year GPAS: average LSAT…

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A: Given,n=1908x=439p^=xnp^=4391908=0.2301

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.