y | f(y) | y*f(y) | y^2*f(y) | |
3 | 0.2 | 0.6 | 1.8 | |
5 | 0.2 | 1 | 5 | |
6 | 0.4 | 2.4 | 14.4 | |
9 | 0.2 | 1.8 | 16.2 | |
sum | 23 | 1 | 5.8 | 37.4 |
a)
Ans:
b)
Check My Work (1 remaining) eBook The following table provides a probability distribution for the random...
eBook Exercise 5.16 (Algorithmic). The following table provides a probability distribution for the random variable y. 5 7 8 f(y) 0. 20 0. 30 0. 30 0. 20 b. Compute Var(y) and ơ (to 2 decimals). var(y)
The following table provides a probability distribution for the random variable y. 2 5 7 8 f(y) 0. 20 0. 20 0. 40 0. 20 a. Compute E(y) (to 1 decimal) b. Compute Var(y) and σ (to 2 decimals). Var(y)
The following table provides a probability distribution for the random variable y f(y) 2 0.10 5 0.30 0. 30 0.30 a. Compute E(y) (to 1 decimal). b./Compute Var(y) and o (to 2 decimals). Var(y)
Exercise 5.16 (Algorithmic)> The following table provides a probability distribution for the random variable y f(y) 0. 20 0. 20 0. 30 0. 30 4 9 a. Compute E(y) (to 1 decimal). b. Compute Vary) and ơ (to 2 decimals). Var(y) (Exercise 5.49 Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. The mean arrival rate is 11 passengers per minute. a. Compute the probability of no arrivals in a one-minute period (to 6...
The following table provides a probability distribution for the random variable y 3 5 7 8 f(y) 0. 10 0. 30 0.40 0. 20 Oa. Compute E(y) (to 1 decimal). 6.2 b. Compute Var(y) and σ (to 2 decimals). C \ Var(y) In San Francisco, 30% of workers take public transportation daily (USA Today, December 21, 2005). a. In a sample of 7 workers, what is the probability that exactly three workers take public transportation daily (to 4 decimals including...
Check My Work (2 remaining) eBook Video Given are five observations for two variables, and y 4 7813 15 The estimated regression equation for these data is-1+2.8z. a. Compute SSE, SST, and SSR using the following equations (to 1 decimal). (y,-y? SST SSE SST SSR b. Compute the coefficient of determination 2 (to 3 decimals) Does this least squares line provide a good fit? Select your answer C. Compute the sample correlation coefficient (to 4 decimals)
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Save Submit Assignment for Grading Question 6 of 10 Check My Work (4 remaining) Exercise 05.14 Algorithmic eBook The following table is a partial probability distribution for the MRA Company's projected profits (z = profit in $1000 s) for the first year of operation (the negative value denotes a loss) a f -100 0.08 0 0.21 50 0.29 100 0.26 150 0.08 200 a. What is the proper value for f(200) (to 2 decimals)? What is your interpretation of this...
Check My Work (11 13. O Video eBook Consider the following hypothesis test: H: =18 H:+18 A sample of 48 provided a sample mean I - 17 and a sample standard deviation 4.5. If requires, round your answers to two decimal places. Enter negative values as negative numbers. a. Compute the value of the test statistic. -1.54 b. Use the t distribution table (Table 2 in Appendix B) to compute a range for the p-value. p-value is between 0.05 and...
TAP a Search this course 。 01u mework: Assignment 7 Check My Work (2 remaining) e A psychologist determined that the number of sessions required to obtain the trust of a new patient is either 1, 2, or 3. Let x be a random variable indicating the number of sessions required to gain the patient's trust. The following probability function has been proposed. f(r)-x for x . 1.2, or 3 a. Consider the required conditions for a discrete probability function,...
Check My Worl eBook New York City is the most ex standard deviation of $55. Use Table 1 in Appendix B in the United States for lodging. The mean hotel room rate is $204 per night (USA Today, April 30, 2012). Assume that room rates are normally distribute What is the probability that a hotel room costs $225 or more per night (to 4 decimals)? 0.3513 b. What is the probability that a hotel room costs less than $140 per...