Assigning probabilities based on historical data

Assignment Help Basic Statistics

Reference no: EM1322897

Q1) Determine critical value t_cfor confidence level c= 0.80 an dsample size n=11

Q2) In random sample of 23 people, mean number of books they had read in past year was 11.93 books and standard deviation was 16.60 books. Suppose variable is normally distributed and use a t- distribution to create a 80% confidence interval for population mean µ. What is the margin of error of µ .

Confidence interval for population mean µ is?

Q3) Perfectly balanced coin is tossed 6 times and tails appears on all six tosses. Then, on seventh trial

i) Tails can not appear

ii) Heads has a larger chance of appearing than tails

iii) Tails has a better chance of appearing than heads

iv) None of these alternatives is correct.

Q4) Method of assigning probabilities based on historical data is known the

i) Classical method

ii) Subjective method

iii) Relative frequency method

iv) Historical method

Reference no: EM1322897

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