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- The value of E(X) for the dizerete random variable Xhaving tihe following probability distribution: o02 04 03 jo1A frequency distribution for the class level of students in an introductory statistics course is shown. Two students are randomly selected without replacement. Complete parts (a) through (d). an example Get more help Class Freshman Sophomore ▲ Junior Senior Frequency 7 14 13 8 a. Determine the probability that the first student obtained is a junior and the second a senior The probability that the first student obtained is a junior and the second a senior is (Type an integer or a decimal rounded to three decimal places as needed.) ...Decide whether the random variable x is discrete or continuous. x represents the length of time it takes to get to work. ... Is the random variable x discrete or continuous? Choose the correct answer below. O Continuous O Discrete
- Which of the following is an example of a discrete random variable? Group of answer choices The number of horses owned by a farmer The length of a window frame The distance from home to work for a worker The weight of a box of cookiesDetermine whether the following value is a continuous random variable, discrete random variable, or not a random variable. a. The amount of rainfall in a country in a year b. The last book a person in City A read c. The time it takes to drive from City A to City B d. The weight of a hamburger e. The number of people with blood type B in a random sample of 32 people f. The number of home runs in a baseball game c. Is the time it takes to drive from City A to City Ba discrete rardom variable, contınuous random variable, or not a ràndom vanable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. d. Is the weight of a hamburger a discrete random variable, continuous random variable, or not a random variable? O A. It is a discrete random variable. O B. It is a continuous random variable. O C. It is not a random variable. e. Is the number of people with blood type B in a random sample of 32 people a discrete random variable,…following random 2. Let W be a random variable giving 1. Classify variables as discrete or continuous a. X: the number of automobile accidents per year in EDSA b. Y: the length of time to paly 18 holes of golf. c. M: the amount of eggs laid each month by a hen. d.P: the number of building permits issued each month in Camiling, the the number of heads minus the number of tails in three tosses of a coin. a. List all elements of the sample space S for the three tosses of the coin and to each sample point assign a value w of W. b. Find the probability distribution of the random variable W, assuming that the coin is biased so that a head is twice as likely Tarlac e. Q: the weight of grain produces per hectare. to occur as a tail. c. Compute for value, variance and standard deviation variabe W. the expected of the random
- When data is said to be binomial, this means that ___________. a. They will always be normally distributed b. There are only 2 sets of data c. There are only 2 categories in which a measurement could possibly belong d. The data is classified into 2 or more categoriesBill Alther is a zoologist who studies Anna's hummingbird (Calypte anna).t Suppose that in a remote part of the Grand Canyon, a random sample of six of these birds was caught, weighed, and released. The weights (in grams) were as follows. 3.7 2.9 3.8 4.2 4.8 3.1 The sample mean is x = 3.75 grams. Let x be a random variable representing weights of hummingbirds in this part of the Grand Canyon. We assume that x has a normal distribution and a- 0.90 gram. Suppose it is known that for the population of all Anna's hummingbirds, the mean weight is u= 4.70 grams. Do the data indicate that the mean weight of these birds in this part of the Grand Canyon is less than 4.70 grams? Use a- 0.05. (a) What is the level of significance? State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? Ho: H 4.7 g; right-tailed Ho: H= 4.7 g; H: < 4.7 g; left-tailed Ho: H- 4.7 g; H: 4.7 g; two-tailed (b) What sampling distribution will you use? Explain the rationale…Which of the following is an example of a continuous random variable (check all that apply) a. The length of time a person sleeps on any given night b. The price of a gallon of gas at any one gas station c. number of passengers on a given American Airlines flight d. number of students who miss class on any given day
- K The data on the right represent the number of live multiple-delivery births (three or more babies) in a particular year for women 15 to 54 years old. Use the data to complete parts (a) through (d) below. Age 15-19 20-24 25-29 30-34 35-39 40-44 45-54 Number of Multiple Births (a) Determine the probability that a randomly selected multiple birth for women 15-54 years old involved a mother 30 to 39 years old. P(30 to 39)= (Type an integer or decimal rounded to three decimal places as needed.) (b) Determine the probability that a randomly selected multiple birth for women 15-54 years old involved a mother who was not 30 to 39 years old. P(not 30 to 39) = 90 510 1622 2838 1845 373 119Plz answer all the partsLet a random variable X have the t, distribution. What is the distribution of X?? Select one: O a. x O b. FA