or a large population of people, the probability distribution for the random variable X = the number of meals a person ate yesterday and the assigned probabilities is given below:
| Meals, X | 1 | 2 | 3 | 4 | 5 |
| Probability | 0.19 | 0.35 | 0.26 | 0.15 | ? |
a) Find P(X = 5), the probability that a
randomly selected person ate 5 meals yesterday.
P(X = 5) =
(b) Find P(X 2), the probability that
a randomly selected person ate 2 or fewer meals yesterday.
P(X 2) =
(c) Find the probability that a randomly selected person ate 1 meal
or ate 5 meals yesterday.
P =
(d) Find P(X > 1), the probability that a
randomly selected person ate more than 1 meal yesterday.
P(X > 1) =
or a large population of people, the probability distribution for the random variable X = the...
In a large scavenger hunt, the number of people on each team is distributed as follows: A team is selected. a) What is the probability that there is only one person on the team? b) What is the probability there are between 3 and 6 people on the team? c) What is the average number of people on a team? d) Determine the standard deviation. x. 2. 4. 5. 6. 8 P(X=x). 0.15. 0.44. 0.26. 0.10 0.05
Assume that 12 jurors are randomly selected from a population in which 85% of the people are Mexican-Americans. Refer to the probability distribution table below and find the indicated probabilities. xx P(x)P(x) 0 0+ 1 0+ 2 0+ 3 0+ 4 0.0001 5 0.0006 6 0.004 7 0.0193 8 0.0683 9 0.172 10 0.2924 11 0.3012 12 0.1422 Find the probability of exactly 6 Mexican-Americans among 12 jurors. Round your answer to four decimal places. P(x=6)=P(x=6)= Find the probability of...
Assume that 12 jurors are randomly selected from a population in which 85% of the people are Mexican- Americans. Refer to the probability distribution table below and find the indicated probabilities. P(x) 0 0+ 1 0+ 2 0+ 3 0+ 4 0.0001 5 0.0006 6 0.004 7 0.0193 8 0.0683 9 0.172 10 0.2924 11 0.3012 12 0.1422 Find the probability of exactly 7 Mexican-Americans among 12 jurors. P(x = 7) = Find the probability of 7 or fewer Mexican-Americans...
Assume that 12 jurors are randomly selected from a population in which 72% of the people are Mexican-Americans. Refer to the probability distribution table below and find the indicated probabilities. x P(x) 0 0+ 1 0+ 2 0.0001 3 0.0009 4 0.005 5 0.0207 6 0.062 7 0.1367 8 0.2197 9 0.2511 10 0.1937 11 0.0906 12 0.0194 Find the probability of exactly 6 Mexican-Americans among 12 jurors. P(x=6)= Find the probability of 6 or fewer Mexican-Americans among 12 jurors....
. The random variable X has the following probability distribution. x P (X=x)( 0 0.25 )(-1 0.35) (-2 0.40) a. Calculate the population mean. b. Graph the probability distribution and show the mean in the graph.
QUESTION 6 Why is the following not a probability distribution? co to ox P(x) 0.11 0.19 0.43 0.17 0.25 The values of x are negative 4 The probability values are not increasing The probability values do not add to 1 The probability values are not discrete 1) The following questions will be about the contingency table below. The table identifies a group of children by one of the four hair colors, and by type of hair. Blonde Black Red 1...
1.) Assume that 12 jurors are randomly selected from a population in which 71% of the people are Mexican-Americans. Refer to the probability distribution table below and find the indicated probabilities. x P(x) 0 0+ 1 0+ 2 0.0001 3 0.0011 4 0.0063 5 0.0246 6 0.0704 7 0.1477 8 0.2261 9 0.246 10 0.1807 11 0.0804 12 0.0164 Find the probability of exactly 5 Mexican-Americans among 12 jurors. P(x=5)=P(x=5)= Find the probability of 5 or fewer Mexican-Americans among 12...
Let X be a random variable with the following probability distribution: Value x of X P(X=x) 0.15 0.10 3 0.05 0.05 0.30 0.35 Find the expectation E (X) and variance Var (X) of X. (If necessary, consult a list of formulas.) E (x) = 0 x 6 ? var(x) -
Fill in the P(x=x) values to give a legitimate probability distribution for the discrete random variable X, whose possible values are -2,-1,0, 1, and 2. Value x of x P ( X = x) -2 0.26 0 0.26 1 2 0.14 X 5 ?
1. Given the probability distribution shown for an infinite population with the discrete random variable, x: X: 0 1 2 3 P(X) .2 .05 .3 .45 a. Determine the mean and standard deviation of x. b. For the sample size, n=2, determine the mean for each possible simple random sample from this population. c. For each simple random sample identified in part b, what is the probability that this particular sample will be selected? d. Combining the results of parts...